Recap / Deltarune Chapter 2: A Cyber's World

The Beginning | A Cyber's World

NOW. SHALL WE ? SHALL WE GO AGAIN ?
THE SECOND FIELD. THE SECOND CONNECTION.

"A Cyber's World", initially released on September 17, 2021, is the second chapter of the episodic Role-Playing Game Deltarune.

The morning after the events of Chapter 1, Kris wakes up to their mother Toriel scolding them for eating the whole pie last night, comically resolving the previous chapter's cliffhanger. The two drive to school, and Susie shows up uncharacteristically early to class. Eager to revisit the Dark World, she and Kris jump back into the school's supply closet and reunite with Ralsei, who has Kris bring over the residents of Card Kingdom and turns his empty Castle Town into a thriving community. However, upon learning about their class project, Ralsei "banishes" Kris and Susie until they finish their homework.

Susie decides to complete the class project in the Librarby's computer lab, only to find another rogue Dark World, Cyber World, inside. There, she and Kris reunite with Ralsei before seeing that their classmates Noelle and Berdly have been made into minions serving the land's own monarch, Queen. While Noelle is only serving Queen by force, Berdly is glad to be her right-hand man. Kris, Ralsei, and Susie best him in combat and split up; Kris reunites with Noelle and journeys through Cyber City with her before meeting back up with Susie and Ralsei.

However, the heroes are captured by Queen, who imprisons Kris and Susie and takes Noelle with her. Kris breaks themself and Susie out, and the pair convince Berdly to change sides before reuniting with Ralsei. Trekking through Queen's mansion, the group confront and corner Queen, who explains that all Lightners have the power to create Dark Fountains, and that she intends to have Noelle open more of them, to spread her idea of happiness to everyone. However, after a series of fights, Noelle finally stands up for herself and rejects Queen's plans; Queen accepts Noelle's decision and concedes defeat.

Realizing how fun their journey was, the group decide to open another Dark Fountain on their own, so they can continue having adventures, only for an enraged Ralsei to stop them, warning that opening too many will trigger an apocalypse called the Roaring. Queen, having been unaware of the actual consequences of opening more fountains, lets the group go. Kris seals Cyber World's fountain and the pair all wake back up in the computer lab, where Susie convinces Noelle and Berdly that their adventure was a dream before walking Kris back home. Toriel invites Susie over and prepares a pie with her. However, Kris secretly tears their SOUL out again, sneaks out, and engages in acts unseen before returning. Finding out that her car's tires were slashed, Toriel invites Susie to sleep over and calls the police before she and Susie fall asleep. That night, Kris tears their SOUL out once more and opens a Dark Fountain in the living room as a menacing grin appears on the TV screen.

However, this isn't the only series of events possible. During Kris and Noelle's journey through Cyber City, the player can enter a toxic bond with Noelle through specific events. After pushing Noelle to go on a genocidal rampage where everything in the duo's path is frozen solid, the player makes a deal with the unhinged Spamton to become stronger, and Noelle is forced to freeze Berdly solid before wandering off in a daze. A distraught Kris reunites with Susie & Ralsei and sneaks into Queen's mansion, which Spamton has conquered as his own in the chaos. Ralsei warns Queen about the Roaring without a fight, but Spamton confronts Kris before they can seal the fountain. The player eventually compels Noelle to return and kill Spamton; from there, the story mostly continues as normal, but Berdly is unresponsive in the Light World and Noelle is left traumatized.

Tropes in this chapter

#-H

• 11th-Hour Superpower: Just like Chapter 1, the fight against the ruler of the world lets Kris combine their powers with Susie and Ralsei to cast Red Buster and Dual Heal. Courage doesn't return though, likely because of how inefficient it really was.
• Adam Smith Hates Your Guts: Downplayed; shows up in only one instance. CD Bagels turn out to be the chapter's best (replenishable) healing items during the Weird Route, and a shop early on sells them for $100 each. However, the Weird Route makes it impossible to backtrack from most areas. Immediately before the route's final boss, there's a convenient vending machine that sells CD Bagels for a marked-up $120 each.
• Alien Sky: The sky seen in Cyber Field has vector lines emanating from the city.
• Alien Geometries: In the mansion's basement, entering the left-most room and walking to the end of it 'reveals' the room to be completely empty. However, when you try to go back to the entrance, it has disappeared, 'trapping' you in the room. Only "un-backtracking" to the end of the room again reveals the path forward.
• All Just a Dream: While this chapter makes it clear that this isn't the case, Susie exploits this by making Noelle believe that she was dreaming, which actually works. So when Noelle "wakes up," her remark about her "nice dream" causes Berdly to believe that it was a dream as well, keeping the secret of the Dark World safe with Kris and Susie. However, it's possible to make Noelle realize That Was Not a Dream in the Weird Route, though it's better not to tell her that at this point...
• All There in the Manual:
  • The spinning diskette NPC you encounter in the Cyber Field is unnamed in the game. Guest artist Samanthuel Gillson (splendidland), who designed the character, named them Fommt in her artworks.
  • The "Plugboy" citizens across the Dark World don't have their name mentioned in dialogue. They're designated as such by their sprites' filenames.
• Alone with the Psycho: After her SnowGrave killing spree, at the hospital, Noelle starts reflecting on how strange Kris is behaving, as she "dreamed" they commanded her to kill with a voice unlike their own and lately they have regularly visited her father for no apparent reason. As Kris sneaks by in a pitch-black screen, you can ignore her or declare to her face that what happened was not a dream. Alternatively, you can equip her wristwatch on Kris beforehand and show it as proof. Heck, you can even silently walk forward until she's backed against the wall. Either way, Susie interrupts the scene and Noelle runs home in fear.
• Anaphora: During Spamton NEO's fight on the normal route, this piece of dialogue comes up just before he first uses his face attack:
  Spamton NEO: KRIS! CAN YOU REALLY LOOK IN MY [Eyes] AND SAY NO!?
  LOOK IN MY [Eyes]
  LOOK IN MY [Nose]
  LOOK IN MY [Mouth]
• Anger Born of Worry: Despite being a bad friend to Noelle and admitting that he was using her to make himself look good, Noelle surrendered to Queen in the Paciifst Route when the latter lied that she would kill Berdly. After they reunite, Berdly apologizes but then makes the mistake of saying that he thought Noelle had a crush on him, and he's fallen for Susie so don't take it too badly. Noelle stares at him. After everything she went through, plus the fact that Berdly was so egotistical that Noelle was obviously pining for someone else, you can't blame Noelle for shaking Berdly silly asking what is he saying.
• Animal Sweet on Object: During Rouxls Kaard's fight, if you built a duck Thrash Machine in Chapter 1, one of the battle texts mentions that the Thrash Machine has fallen in love with your Swan boat.
• Antepiece:
  • Early on, the player battles Queen in a Punch-Out!!-inspired minigame where you have to dodge her attacks and strike back. This is actually a tutorial for the chapter's main boss, Giga Queen, where in addition to dodging her attacks by moving your SOUL, you have to use the same controls from the minigame to dodge and fight back against her, in addition to standard battle commands like ACTing.
  • The player fights against Sweet Cap'n Cakes in a fight designed to teach the player about everyone besides Kris getting their own actions, assuming you're going through it passively. You're shown that you need to make everyone dance through your ACT action, but it won't work because none of the three enemies dance long enough to win the fight. Instead, Susie questions why she needs to have Kris tell her what to do, prompting Susie to learn S-Action and Ralsei to learn R-Action. You then have to use these special actions to win the battle.
  • Throughout the Chapter, the player encounters a number of teacup rides, many of which require the player to rotate them to grab orbs that move them further upward; one late into Queen's mansion instead has the player rotate the ride to avoid various laser orbs. The latter ends up being a tutorial for a much harder teacup ride obstacle course in the mansion basement, which Kris must complete as part of Spamton's sidequest (though nothing will stop the player from completing the harder ride first).
• Anti-Frustration Features:
  • This chapter introduces a Mercy Meter to show how much progress you're making towards sparing an enemy, which is especially useful since unlike in Chapter 1, the majority of enemies take more than one ACT to make spareable.
  • Given the three-year gap from the first chapter, a lot of players probably forgot about the gameplay's mechanics. Fortunately, Castle Town's dojo's first two challenges remind you of the finer aspects of Deltarune's battle system (ways to spare enemies and grazing bullets to obtain TP, respectively), meaning that you won't need to replay chapter 1 for a tutorial.
  • Some boss enemies will be instantly spared when you get their Mercy Meter to 100%, as opposed to needing to take one last turn to spare them as you would with normal enemies.
  • Both routes have some form of Spamton fought only with Kris as a mandatory boss (regular Spamton in the standard route, Spamton NEO in the No Mercy route). To compensate for the lack of party members, Kris gains a powerful self-heal ACT in both battles, while in the second the Attack command deals extra damage, another ACT will deal double damage on top of the attack bonus, and the difficult part of the fight ends when Spamton NEO reaches critical HP rather than completely draining it.
  • If you Spare an enemy whose Mercy Meter isn't at 100%, it will still slightly fill up the meter, preventing you from wasting a turn.
  • Kris normally has a bit of a wind up on reaching full sprint speed in the dark world, likely to prevent from completely trivializing the overworld dodging sections. In the light world, Kris moves at full dark world sprint speed immediately, and moves even faster after the ramp up time.
  • As a bit of a time-saver, if you have multiple items for Malius to fuse, they'll only do the entire animation for the first item and every item after will be merged in a single swing.
  • During the alternate route, doing actions that progress you make a minor-key jingle play to let you know that you're on the right track. Conversely, doing an action that gets you off that route plays a major-key variation of that jingle.
  • Should the player continue after dying on the teacup ride in the mansion basement, the game will place them at the entrance to the room, skip the long wait for the ride to arrive, and speed up the slow descent into the darkness so they can quickly try again.
  • If you die to Spamton NEO, you reset back to the robot in the basement, before putting the LoadedDisk in, letting you exit the basement without needing to fight Spamton NEO or resetting the game.
  • If you get hit by Giga Queen too often during her attack phases, she will ask, "Oh No Did You Forget How To Control A Giant Robot" and re-explain the controls.
  • At first, if you lost to Giga Queen the battle would automatically restart after a brief Game Over screen and you would have to quit the game if you wanted to reload your last save. A patch was added soon after so that the Game Over Screen would give you the option to restart the fight or reload your save instead.
  • If you save in Castle Town after defeating the final boss, you are locked out of returning to Cyber World in that save file. Initially, this was only implied (by in-game lore and the fountain being sealed), but a later patch added an explicit warning immediately before the option to save that saving at that time was going to make it a Point of No Return.
• Arc Words: "Getting stronger." These words define Noelle in the SnowGrave Route, as she becomes more powerful. Her LV increases from killing enemies as she becomes more used to her ice-based powers, and is corrupted by the player into being an obedient puppet that kills on their orders. Her HP and attack power also both increase, and she learns the Dangerous Forbidden Technique SnowGrave which is a One-Hit Kill move. Otherwise in lighter routes, she undergoes Character Development and eventually stands up to Queen.
• Are You Pondering What I'm Pondering?: Backtracking to the Acid Pool sequence and interacting with the switch again will have Ralsei wondering if Kris is thinking back on their pedalo ride together. The text states that Kris is actually thinking about flicking the switch a lot to clog the acid river with swan boats. Similarly, backtracking to and interacting with the Ferris wheel poster in Cyber City has Ralsei wondering if Susie is thinking back on her Ferris wheel ride with Noelle. She's actually thinking about what the "Ferris" in Ferris wheel stands for.
• Are You Sure You Want to Do That?: Played with in the No Mercy route. When telling Noelle to cast the SnowGrave spell on Berdly (which is explicitly stated to be "fatal"), Noelle will initially say that she doesn't know that spell. You have to keep telling her to cast SnowGrave until she finally unleashes her power; choosing to do anything else after telling her to do it once will cancel the No Mercy run.
• The Artifact: Even though Ralsei has taken off his hat, he still uses his "masked" appearance in his battle menu HUD.
• Ascended Extra: By Chapter 2, Noelle and Berdly have became main characters, with Susie and Ralsei being sidelined multiple times to prioritize Noelle, and Berdly being the secondary antagonist on the normal route.
• Ascended Glitch:
  • During the Undertale 6th Anniversary Stream, Toby saw players claim to be able to see Kris' right red eye during their walking animation, especially in the Dark World, and he clarified that it's really just the result of the pixels occasionally blending together. Come Chapter 2, and as a blink-and-you'll-miss-it Easter Egg, you can see a glimpse of Kris' right eye during the Dark World transformation sequence.
  • Players discovered an exploit during the Spamton NEO fight that allowed them to string several charged shots together by holding either the [Z] or Enter keys while pressing the other. Rather than remove this in the patch for v1.05, Toby and the team kept it in and instead added an internal counter for how many times it saw use, as the "funnycheat" variable. In the patch for v1.06, it was then made so that Spamton would actually react to it, getting visibly angry and making his attacks deal more amounts of damage the more the player abused it. As of v1.07, it also alters his attack patterns to make them harder to dodge, and also makes him pull out his more complex attacks earlier in the fight.
  • A wrong-warping glitch was adjusted in patch 1.06 to require holding two buttons to perform, ensuring casual players wouldn't run into it accidentally while still leaving it accessible to speedrunners.
  • After being removed in a patch, the misplaced pixel in the King's arena returned in the Chapter 2 update, as well as adding a misplaced pixel to Queen's arena, turning a graphical error into a subtle Running Gag.
  • Older versions of Chapter 2 had a glitch where if the wheeled pots/Pipis in Queen's Mansion are interacted with without directly touching them, then they'll break without the resulting battle actually taking place. The 1.08 update kept the trick intact, but added a unique animation where said pots/Pipis rise up into the air with an accompanying sound effect.
• Ascended Meme: Several points in this Chapter refer to earlier Fanon.invoked
  • Fans were tickled pink by the bizarre option to have Kris eat moss at one point in Chapter 1, and referenced it often in Kris fanart and comics, embracing it wholeheartedly as part of Kris being a lovably strange weirdo. Chapter 2 runs with it, establishing that, in this case, you're not forcing them to do anything against their will, Kris likes eating moss. It gets referenced in several pieces of flavor text and Susie wanting to eat moss too.
  • After Chapter 1's shocking ending led to many questions about Kris' true nature and whether they were actually evil when outside of player control or had fallen under Demonic Possession courtesy of Chara, many fans believed the game would pick up to reveal that Kris had murdered some residents of Hometown after the end of the first chapter. A section of fans instead Played It For Laughs by joking that Kris was only conjuring a knife and looking gleefully sneaky because they wanted to cut a piece of pie for themself. To the surprise and absolute delight of the latter group, this joke actually became canon with the start of Chapter 2, as offscreen Toriel first seems to react like she's being attacked by Kris with a knife, only for it to turn out she's scolding Kris when she catches them red-handed and figures out they ate the entire pie by themself last night.^note Granted, that was offscreen and the ending for the second chapter confirms Kris (seemingly, along with Ralsei) is up to something they're not telling the player. However, the love they have for their family and friends in the first two chapters at least makes it clear that, whatever their plan, they're not some heartless murderer plotting to kill everyone.
  • The Poppup fight has lighthearted allusions to all the party members' interests with its pop-up ads, with Ralsei's and Kris' in particular clearly nods to the fandom from Chapter 1 memes:
    • Many fan depictions of Kris, both good-hearted and villainous, depict them as having an obsession with knives, similarly to fan depictions of Chara. This took hold after the memorable twist ending of Chapter 1, which showed Kris materializing one and then grinning with glowing red eyes. In the Poppup fight, one of the flavor texts for the Click act is Kris "unconsciously" clicking on "a video about making knives out of spaghetti." Their room in Queen's mansion also shows they look up videos about making jello in the shape of various knives.invoked
    • Ralsei was seen as such a cute, wholesome character in Chapter 1 that of course fans started making memes of him wielding a gun and being an adorable badass terror. The Poppup ads for him riff on it by having him trying to click on innocent things (like a bunny teaching you how to make friends) and accidentally clicking on ads for machine guns and bazookas instead.invoked
  • Some fans think that Ralsei taking off his hat was an Unnecessary Makeover. In his town in the 2nd Chapter, a hanger has his hat. Talking to the hanger twice has the hanger want to hang on to the hat, preventing the player from putting the hat on Ralsei.invoked
  • A lot of people got mixed up with the pronunciation of Rouxls Kaard's name. Before his boss battle, he says this.
    Rouxls Kaard: The Rouxls (pronounced Rules) art simple!invoked
  • A Crack Ship has Susie with Berdly. The game adds some Ship Tease with Berdly, who eventually confesses of his attraction of Susie... but he confesses those to Noelle.invoked
• Asleep in Class: Berdly reading a book in class causes Kris to fall asleep. By the time Kris wakes up, everyone else in class has left. Dialogue from Alphys confirms that Kris falling asleep in class is a regular occurrence, though they usually only sleep through the first part of class.
• Audio Diegesis:
  • While fighting Sweet Cap'n Cakes, their attacks — which come from both themselves and a giant pair of speakers they summon — occur in time with the music, fitting their boombox motif.
  • The portraits in Queen's mansion laugh in response to one of the sections of the background music.
  • While fighting Rouxls Kaard, he shouts "hey" in sync with the music.
  • When in Spamton's shop, the phone ringing in the shop syncs up with the ringing sound in the music.
• Background Music Override: "Pandora Palace", the song that plays in Queen's mansion, replaces the standard battle music while in the mansion. This same effect is applied for "Deal Gone Wrong", which replaces Pandora Palace during the Weird route.
• Bait-and-Switch:
  • As Susie and Kris prepare to investigate if the closet really does lead to the Dark World, Noelle approaches them. It seems that she will join in on the fun. Susie and Kris quickly make up an excuse, and Noelle stammers to Kris that she wants to meet Susie at the library before making her exit.
  • From the way that Kris and Susie jump into the Castle Town, one assumes that the adventure will take place there. Nope; Ralsei reveals that all is well in the Castle Town and jokingly exiles the duo so they can work on their school project. The library is the one that has the real gameplay for Chapter 2 due to a mysterious portal opening.
  • Early on in Queen's mansion, Susie hears "soft-yet-tender screaming" and, assuming it's coming from Ralsei, concludes that he's in danger. It turns out to be some Swatchlings squeeing at how cute he looks in his butler outfit.
  • The fight between Queen and a wire-controlled Berdly is framed as a direct and thorough parallel to the King fight in Chapter 1, right down to the stray pixel in the arena, leading the player to believe that this'll be the climactic last battle of this chapter. However, after defeating her in battle, Queen abruptly escapes to activate her GIGA Queen mech, kickstarting the real final fight.
• Behind the Black: When the group first reaches Queen's mansion, they somehow don't notice that Queen is standing right on the other side of the path until the camera pans over to her.
• Big Damn Heroes:
  • As Kris is cornered by Spamton NEO and is about to lose their soul, Susie and Ralsei come in and protect Kris.
  • After Giga Queen knocks the group off the balcony, Berdly swoops in to save them, with everyone they recruited during the chapter in tow.
• Big "NO!":
  • Toriel screams out one of these during the opening when she sees a knife. However, it's because Kris ate all of the pie from the fridge when she told them not to do that.
  • Berdly has one when Queen tells him she's not actually a gamer like he believed; she only plays mobile games.
  • After the fight against Spamton NEO, Susie notices Kris is uncharacteristically nervous and asks if they're okay. If you choose "No", Kris apparently yells it.
• Big "WHAT?!": When Berdly confesses that he has a crush on Susie to Noelle, Noelle starts shaking him by the collar while repeatedly shouting "WHAT!"
• Bleak Level: If the player chooses to undertake Spamton's sidequest, they eventually find their way to the basement of Queen's mansion, an eerie and dimly-lit series of hallways with a few hazards here and there, punctuated by "Digital Roots", a slow, rumbling arpeggio. It's a far cry from the upbeat eccentricity of the rest of the game.
• Bookends:
  • The start of Cyber World has Kris dodging drops of electricity from hanging wires. The corridor before fighting Queen's first phase has you dodging those same hanging wires.
  • The song "HEY EVERY!" plays when Kris first runs into Spamton in an alleyway dumpster. At the end of his sidequest on the normal route, if the player defeats Spamton NEO by cutting his wires, his brief euphoria is scored by "A Real Boy!", a more upbeat version of "HEY EVERY!".
  • The first enemy type you fight in the Cyber World is the Werewire, a Plugboy who is transformed by and attached to a cord. One of the ways you can spare it is to cut the cord loose, reverting it back to a Plugboy. The concept of cutting wires to free an enemy is reused towards the end of the chapter in two cases:
    • The first battle against Queen features Berdly at her side, attached to the same kind of cord found with the Werewires. You can either loosen the cord to eventually free him, or directly fight Queen for long enough that he breaks out of it himself, injuring one of his arms in the process.
    • Spamton NEO is held up by small wires as if he was a marionette. You can spare him by snapping the wires, but this results in him collapsing onto the floor and lying motionless, subverting his newfound freedom.
• Brick Joke:
  • At the end of Chapter 1, the animals say that the kings can stay in their cages, as long as they dress like animals. Come Chapter 2, the kings are dressed up like animals, and the animals are dressed like kings.
  • In Chapter 1, there'll be an apple on Toriel's teacher desk in her classroom, with the Flavor Text stating that it's "some kind of teacher food". If you go back to the classroom again this chapter, it'll be changed to an orange, with the text now wondering "if it's safe for teachers to eat this".
  • If you examine Asriel's bed in Chapter 1, it'll state there's a game console underneath with two controllers; one normal and one knockoff. If you examine Toriel's classroom computer at school here, the desktop wallpaper is said to be Kris and Asriel playing a video game, and Asriel is using the knockoff controller.
  • Noelle remarked to Kris during the epilogue of the last chapter of an event in their childhood where Kris told her the pezza mascot ICE-E was both real and a child-eating monster, in order to scare her. Here, when you walk through the personalized room that Queen created for Noelle from her internet search results, one object is a statue of a hairy ICE-E, taken from the search result "is ice e real cryptid".
  • When Lancer enters Kris's inventory, he tells Susie, confused where he went, that he's resting in Kris's pocket. Susie states she doesn't know what that means, having no concept of an "inventory". Much later, when Lancer is deployed to help Kris and Susie escape from Queen's mansion, Susie asks with surprise where he came from. Lancer tells her he was in "Kris's spacious Pants Hole", having taken Susie's confusion the wrong way, and she... even more confused now, tells him to say "pocket".
  • From the same conversation, if you talked with Noelle about Susie in the last chapter, she'll give Susie a lunchbox filled with chalk in the beginning of this chapter. Susie won't understand what it means, and gets mad that Noelle had chalk this whole time and didn't give any to Alphys in the beginning of the last chapter. The chalk will turn into LightCandy in your inventory when you go into the Dark World, and has unique dialogue depending on who eats it; if you give it to Noelle…
    "I-isn't this the chalk I gave her?"
    • Even funnier, if you told her that Susie ate the chalk in Chapter 1, she'll ask about what kind of chalk Susie might want to eat before deciding that giving her a lunchbox full of chalk would be stupid. She does it anyway.
  • In Chapter 1, Temmie mentions her distaste for Susie because she told Temmie her egg would never hatch, and inspecting the egg reveals it to be hard boiled. In Susie's personalized room, there is a painted, warm egg generated from the query "can harboil eggs hatch"(sic). She literally searched up whether or not Temmie's egg could hatch and told her about it.
  • Early on when you check a cupboard at home, you will find a book titled "How To Draw Dragons", which the narration will claim Asriel will never return to the library after commenting how the dragon on the cover is, erm, provocatively dressed. Later on when you have Noelle in your party if you have her click on a Poppup enemy, one piece of Flavor Text will say that she misclicked on a link to buy the same book. The book itself is a Brick Joke, as Berdly mentioned it was several-thousand days overdue in the last chapter if you talk to him in the "Librarby".
    • If you call Toriel on your way to the Librarby in the beginning of this chapter, she'll assure you that if Berdly harasses you about the family "debt", she'll throw a smoke bomb in the room so Kris can escape.
  • Kris has decorative moss in the bottom right corner of the room that Ralsei made for them, and Susie's fridge has nearly everything that she's eaten or the food that she mentioned that she's eaten from Chapter 1. Ralsei sure went all out with meeting their preferences.
  • One of Susie's compliments during battle in the last chapter was "You are unbanned from Free Ham Sandwich Day". Talking to the Rudinn Ranger in Castle Town has them declaring today "National Ham Sandwich Day of Independence". Apparently, the enemies really took it to heart.
  • If you inspected every single bed in Hathy's Room in Chapter 1, you'll be given the rank of Bed Inspector. This carries over into the second chapter; if you have the Bed Inspector rank, the description for Kris's bed in Ralsei's castle will be different.
    "It's a bed that's been carefully crafted. It's suitable for a bed inspector."
  • If you had Kris throw away Ralsei's manual in Chapter 1, the table lamp that would normally be in Kris's bedroom in Ralsei's castle in Chapter 2 will instead be a trash bin. Ralsei cheerfully tells Kris they can use it to throw away future manuals he might give them.
  • If you hurt one of the Sweet Cap'n Cakes hard enough during the fight against them, they'll simply heal themselves using a carton of almond milk, just like K. Round did in the previous chapter.
  • To help Kris reach the controls of Queen's arcade machine, Ralsei kneels to make himself into a "Stool Forme" for Kris, a repeat of Lancer doing the same thing in Chapter 1 to help Susie reach the Dark Candy fruit, complete with an explosion sound effect and sudden inexplicable glowing.
  • In the first cutscene of the Cyber World, Queen mentions that she wants to make Noelle's face a robot face. Queen calls up an icon of a poorly-drawn robot face. Later, Noelle disguises herself by putting on a cardboard box that has the same poorly-drawn robot face. Queen is not only fooled but also says "Wow Cool Face."
  • During the "AGREE2ALL" word puzzle, Susie wonders whether the solution word could be used as a driver's license number to drive Toriel's car. She then says that, before they can drive it, they should improve her car by painting it purple and adding flames on the side. Guess how Susie's roller coaster car is decorated?
  • On the roller coaster ride into the city, Queen attempts to trap the party in cages, but misses completely. She claims this was intentional — she was just trying to calibrate the system — but she can't use it again as those four cages are the only ones she has. Both of these details come up again once they make it to her mansion alongside Noelle and Berdly; Queen uses those same cages to capture the four Lightners in short order, remarking that she's glad she remembered to calibrate them earlier. When Ralsei then asks what she plans to do with him, she tells him she has no idea, as she doesn't have another cage to hold him.
  • Before Susie and Ralsei separate from Kris, Susie asks Ralsei to teach her healing magic. Once Kris reunites with them, Susie shows off her healing magic… which is extremely cost-inefficient.
  • During the driving minigame, Queen asks Kris to get a banana in the middle of the road. Later, during the pedalo ride with Ralsei, one of the items they can get during the ride is a banana.
  • If you back-track to where Berdly's giant gold statue originally was after entering Queen's mansion, you'll find two Swatchlings sweeping up, stating Queen ordered them to throw that giant "garbage" away (explaining how it ended up in the toilet).
    • When Berdly first shows off the statue, there's a smaller statue of Queen clinging onto his bicep, which has disappeared by the time you find it stuck in the toilet. A few rooms later, you can find it slowly sinking into the river of acid.
  • If you push the petrified Lancer to the dining table after he's been Taken for Granite, a bib and a plate of spaghetti will suddenly descend on him from somewhere above. If you check back on him later, the spaghetti will be gone, implying he somehow ate it offscreen as a statue.
  • If you talk twice to the Swatchling near the entrance of the second floor of Queen's mansion, he'll mention he's normally terrified of mice, but it's okay because that particular mouse in the room is wearing a wig. A few rooms later, there are three Swatchlings tip-toeing in terror at several Maice infesting the kitchen. One of the Swatchlings notes in horror how they're not even wearing wigs!
  • In Toriel's classroom, there's a tall stack of school chairs that the Flavour Text dubs the "Throne of the Gods", which gets even higher in this chapter. In Queen's mansion, there's a similar stack of dining tables dubbed "the supreme table". And in Sans' grocery store, part of his Troll to Kris is a pile of shopping baskets that's too high for Kris to get one from, denying them the ability to shop. A second examination refers to the stack as the "Throne of Evil's(sic)".
    Examining the stack of tables: (You won't be able to use this without the Throne of the Gods…)
  • Not only has the misplaced pixel on the King's arena from the first release of the game returned, but Queen's arena has a misplaced pixel as well.
  • That saucer of milk that Alphys has been leaving for an unseen cat in the alleyway in the last chapter? If you interact with the milk saucer in the epilogue of this chapter, Susie implies that she's the one that's been drinking from it (although she's unaware of where the milk comes from).
  • After completing the "AGREE2ALL" puzzle, Queen says that she can now use the party's likeness for funny statues. Noelle's room later contains a statue resembling Susie.
  • During Susie's Ferris wheel ride with Noelle, she'll look out at the city below and say she imagines herself as "Susiezilla" so "she could wreck the whole city". At the end of the chapter, when Susie is staying over at Kris's house, she changes the channel on the television to a kaiju movie special, which shows a giant purple dinosaur destroying a city.
  • One of the alleys in the city is inexplicably full of cheese. Later in Queen's mansion, a Swatchling reacts to a Mauswheel in the kitchen by lamenting how he should have finished dumping all the cheese in the alley.
  • At one point if you talk to Susie, she'll recall how Kris's apple-scented shampoo made their hair smell really tasty, and she has to stop herself from trying to bite their head in class every day. At the end of the game, if you interact with the apple-scented shampoo in the bathroom, it's noted to be suspiciously lighter. Kris will ask Susie about the shampoo, which Susie awkwardly denies drinking. If you have Susie drink the Kris Tea, it will also taste like apple juice for her.
  • If you interacted with the "Librarby" computer lab door three times in the epilogue of the last chapter, the dialogue will change from "a dog is working on a game inside" to the dog playing maracas instead. If you check the computer lab supply cabinet in the epilogue of this chapter, the text will note it's filled with extra tech devices like computer mice, typing keyboards, and maracas.
  • If you befriended Onion in the last chapter, you'll have been given the chance to tell them your name was either "Kris" or "Hippopotamus". In this chapter, they'll have somehow remembered your name so badly, it'll be a corruption of the name you didn't give them.
  • In order to control Noelle, Queen threatens that "A Certain Bird Might Take A Ride In The Acid River", before it's revealed that Berdly is safe and sound. After the swan boat crashes into the giant hand in the acid pool, interacting with it again has the game say "(Looks like a certain bird is having a ride on the acid river.)"
  • One of the dead end rooms in Queen's mansion features a giant water bottle hanging from the ceiling, resembling the one found in King's cell beneath Ralsei's castle. In the post-game return to Castle Town, you can visit King to see an optional conversation between him and Queen, who notices the water bottle and remarks that the one in her mansion was much better.
  • When Queen readies her special attack in her mech form, she brings up the original purpose of the Thrash Machine your mech is made from: to get your ass thrashed. By her.
  • In Chapter 1, interacting with the metal benches next to where Onion is, you'll be prompted to try to put your fingers through, which you can't. Interacting with those same benches with Susie has her remark the same thing.
  • In the beginning of the last chapter, if you flush the toilet too many times, Toriel will ask Kris if they're putting a bath bomb in there again. In Queen's personalized room for Kris, one of the items is a huge pile of bath bombs from the search result, "diy bath bomb".
  • In the forest segment of the first chapter, Lancer and Susie are seen being fanned by a pair of Rudinn, who lament being forced into such a demeaning position. In the epilogue of the second chapter, Queen and Lancer are being fanned by another Rudinn, who lampshades being stuck in the same position again.
    "Can't say I'm a fan... or can I?"
  • Knocking on one of the residential doors in the Light World in the epilogue of Chapter 1 prompts an unseen NPC to state that you have the knock of a beginner, and to "come back when you've gotten better at knocking". Knocking again in the epilogue of this chapter now has the resident state you have the knock of an amateur and still have "a long way to go".
  • If you interact with the sink in his hospital room before talking to Rudy in Chapter 1, he'll jokingly ask Kris what's so interesting about that sink. Doing the same thing again in Chapter 2 will get unique dialogue from him.
    "Damnit all, Kris! You really love that sink, huh? That's Sink 2, Rudy 0. Don't worry, I'm gonna pull it back! You wait!"
  • Kris's first encounter with Spamton has him ask for their [[HeartShapedObject]], and several of his other offers during his fight involve monetary payments, with Kris always losing at least some cash after the fight even if the player never accepts them. During the epilogue, Kris can give Undyne's box of chocolates to Sans, who interprets it as a refund request and gives them $5 in response — effectively, Kris gave away their other heart-shaped object and gained money out of it.

• Buffy Speak: After Susie gets hurt falling off a trash pile and Ralsei heals her, she refers to his Heal Prayer spell as "that healing thingy".
• Call-Back:
  • The Machine to Thrash Your Ass returns as the robot with which you use to battle Giga Queen as the Final Boss. Roulxs Kaard also uses it against you in his boss battle.
  • One of Werewerewire's idle flavor texts^note Werewerewire shuffles coolly. parallels one of K. Round's idle flavor texts.^note K. Round shuffles hotly.
• Cat Up a Tree: If you examine the pinned photos inside the police station, it shows photos of Undyne and Napstablook attempting to rescue Catti's family, who all got stuck up a tree. Napstablook also somehow got stuck up the same tree in the progress.
• Charged Attack: During the battles with Spamton NEO, you have the ability to do this. Doubles as a pun, since Spamton is obsessed with being a BIG SHOT, which the charged attack produces literally; in his superboss fight, he lampshades this.
• Chekhov's Gag:
  • The muscular gold statue that Berdly made of himself (and that you can later find stuffed in a toilet) ends up becoming the base of the giant Combining Mecha in the Final Boss fight against Queen's giant mech.
  • The Mundane Made Awesome "transformations" Kris, Ralsei, and Susie did to reach the controls of the arcade machine to fight Queen in the Punch-Out!!-style game-within-a-game. In the climax, they end up doing it again, but now everyone who they recruited and befriended prior joins in to form a real giant mech-combiner in a Punch-Out!!-style boss battle against Queen's giant robot. If you loaded data from Chapter 1, even the shitty kick-your-own-ass robot you designed contributes to its form.
• Chekhov's Gun:
  • The Thrash Machine that you designed in Chapter 1? Rouxls Kaard is able to use Cyber World's technology to build it properly and use it as a weapon against Kris and Ralsei. Later, it gets used to create a mech to use against Queen's giant robot.
    • If you used the duck head for the design, the Thrash Machine's main attack in fight against Rouxls Kaard will be pathetically easy to dodge (allowing you to get easy TP), but your Thrash mecha in the final boss will have "Duck Mode", a "sucky attack"… which drains HP from Queen with every hit.
  • The Punch-Out!!-esque minigame at the beginning of the Cyber World? It's actually a tutorial for the Final Boss.
• Clickbait Gag:
  • Buildings in the Cyber World are almost all labelled with giant neon "AD" and "BUY" signs, managed by creatures who only exist to advertise to you. Even their dialogue boxes are advertisements!
  • One enemy is a parody of the pop-up ad.
  • The boss character Spamton is the living parody of spam and clickbait, promising you hot singles in your area, rapid financial gains, and links to explicit websites in exchange for money and your personal information. Like real clickbait, he's not to be trusted, and checking him outright says you should never give him money. His boss fight even ends, like many a YouTube video desperate for engagement, with him asking you to like and subscribe.
• Climactic Elevator Ride: The teacups ride down to the force field deactivation switch takes excruciatingly long, leaving Kris to spin aimlessly in the darkness.
• Clingy Macguffin: The "Cards" Light World item, the Light World form of Lancer and Rouxls Kaard, can't be discarded. Attempting to do so just gives a message saying that Kris "fumbled and caught them".
• Comically Missing the Point:
  • Queen kidnaps Noelle, throws her in a cage, threatens to turn her face into a robot-face, and demands she sign a peon release form. When Noelle says she's scared, Queen asks if she's never signed a form before; Noelle has to clarify that it is everything else that she finds scary.
  • Near the beginning, in the classroom, Susie kicks her desk to get Kris's attention. Alphys asks that she not kick the desks, and treat the school's property like people. Susie agrees, stating that next time she'll "aim for the vitals".
  • Before Kris, Susie, and Ralsei befriend them, Cap'n and K_K try to con them out of their money by selling CD Bagels for $400 when they usually go for only $80. However, K_K tries to sell a bagel for its original price, and when Cap'n tells him it's actually 400 [dollars], K_K offers them 400 bagels for $80.
• Contrasting Sequel Antagonist: While King was mainly portrayed as a Bad Boss and Knight of Cerebus who remained unseen until near the end of Chapter 1, Queen makes her presence known to Kris and Susie almost immediately after they enter her Dark World and appears to be more Laughably Evil whenever she appears. Additionally, Queen is motivated by making all Lightners happy, compared to King's goal of making Darkners rule the world. Of course, that doesn't stop her from being able to fool Berdly, but she willingly performed a Heel–Face Turn after learning from Ralsei the consequences of opening too many Dark Fountains. She also takes much better care of Lancer than Spade King, becoming his unofficial mother.
• Cooperation Gambit: When you meet Queen alone in the alleyway, she proposes that she and Kris form a truce, in order to find their teammates. This is followed by Berdly barging in, forcing Queen to hide. Berdly then forms another truce with Kris, with the exact same premise as Queen.
• "Could Have Avoided This!" Plot: At the end of the chapter, Ralsei asks Queen why she's trying to trigger The Roaring and bring about The End of the World as We Know It. Queen's answer is that she had no idea The Roaring was even a thing, and she calls off her plans immediately, leaving Ralsei utterly flabbergasted. This is hammered in by the Weird Route, where Ralsei tells Queen about The Roaring earlier, skipping her fight.
• Covered in Gunge: Both Kris and Ralsei are subject to a deluge of a brown coffee/chocolate-like substance on the final teacup ride of the chapter. Susie averts it by actually opening her mouth and drinking it whole. Regardless, they get themselves cleaned up quickly the moment they jump off.
• Crucified Hero Shot: Queen suspends Noelle in such manner before the final fight on a giant hand. With rope.
• Cultural Translation: In the Japanese localization, several of Queen's aspects get changed to match Japanese internet slang:
  • In English, Queen's dialogue is written with all words capitalized and minimal punctuation. In Japanese, her text is written like HTML comments, starting with <!-- and ending with -->.
  • The dialogue portrait that displays "LMAO" on Queen's visor in English shows "WWW" instead in Japanese^note "W" stands for "warau", the Japanese word for "to laugh/to smile", so "WWW" is the equivalent of "LOL".
  • Spamton's dialogue received a similar treatment. To emulate his random creepy interjections in the middle of his own sentences, the Japanese text replaces instances of "dai" and "desu" with the English homophones "die" and "death", e.g. writing "daisuki" as "dieすき" rather than "だいすき".
• Cutting the Knot:
  • When you encounter the second Annoying Mouse puzzle during the Weird Route, you have to force Noelle to freeze the puzzle solid in order to keep the run going, rather than solving it normally. After that, Noelle automatically freezes every puzzle you encounter.
  • In one room of Queen's mansion, one of the keys to the door ahead is hidden under one serving dome out of many, many more. The solution is to look for a different table that looks shorter, which is revealed to have the Annoying Dog underneath it. The party then proceeds to sit on the table while it runs around and wrecks the room apart until the key is found. The dog then proceeds to destroy the key and then just ram through the door.
• Cyber Green: This chapter uses a lot of bright green, palette-wise, as befitting this chapter's cyber nature. From the skyline of green vector lines to the vector graphics of the Punch-Out!!-esque minigame to the green walkways and green neon signs of Cyber Field.
• Cyberspace: Chapter 2's Dark Fountain exists in the library's computer lab, which makes its corresponding Dark World a futuristic digital city. Its denizens and enemies are all based on various aspects of computers, from task windows to viruses to adverts.
• Damned by Faint Praise: When Berdly unveils his statue of himself, Queen tries to complement him and is at a loss for words for a moment; the best she can come up with is "I Love Tolerating You."
• Darker and Edgier: If you thought Undertale's Genocide route was dark, this chapter's counterpart — the Weird/SnowGrave Route — is even darker, due to the context of corrupting the timid sweetheart Noelle into a cold, power-seeking murderer through the use of emotional manipulation and pressure that you, the player, put her and Kris through, which reaches a logical conclusion when she snaps and freezes Berdly in a block of ice with a spell outright labelled as "fatal." When they get back to the light world, Berdly is still unresponsive, and all signs point to him actually being dead. While Undertale's Genocide route involved the player corrupting themselves and terrorizing a society of monsters, Deltarune's involves making the people who have absolute trust in you do it in your stead to the point that even their own friends aren't safe from them. Another notable difference is of the human Player Character; while in Undertale, Frisk is an emotionless blank state who you don't even learn the name of until the Golden Ending, Kris has a clear personality and identity of their own, and on multiple occasions in the darker route, shows extreme discomfort at being forced by the player to manipulate Noelle into killing.
• Dark Reprise:
  • "Bluebird of Misfortune", the song that plays when Berdly admits he's not a genius and talks about his backstory and his friendship with Noelle, is a melancholy version of "Berdly".
  • The soundtrack titled "The Dark Truth," which plays as Ralsei warns about the devastation that would happen when too many Dark Fountains are opened, includes a more tragic-sounding version of "Don't Forget," the game's Leitmotif and Ending Theme.
• Deadly Euphemism: In the Weird Route, you have to obtain an item that's always one Dark Dollar more expensive than what you're carrying. In order to obtain it, you need to have Kris tell Noelle to "get it", repeatedly. She's confused by what you mean at first, but eventually understands. The screen cuts to black with the sound of a spell being cast, and once the screen comes back, the shopkeeper has disappeared, and now you have the item.
• Deconstructed Trope:
  • The idea of The Leader. While Susie underwent Character Development in Chapter 1 to become more of a team player, that doesn't mean she's not still violent and impulsive. In a Pacifist route, when Kris can't win a battle through their own actions, Susie takes the initiative to get her own actions, becoming more independent. Also, when Kris must choose whether to go with Susie or Ralsei in a party split, Susie decides to Take a Third Option and go with Ralsei herself, leaving Kris alone.
  • The Weird Route deconstructs The Leader even further with the emotional manipulation and gaslighting that Noelle goes through. It shows what kind of person would be such an Extreme Doormat that they would do something against their nature just because somebody else told them to do it. Noelle clearly isn't comfortable with the idea of freezing people to death, but she's so naturally submissive that Kris can manipulate her into doing it anyway.
  • Fighting Your Friend is played more seriously in the Pacifist Route. In Chapter One, Kris and Ralsei humored Susie trying to become a "bad guy" because they knew that she would come around; more importantly, she convinced Lancer to switch sides by being his fellow bad guy. Noelle fighting Berdly is a different story; she tries to reason with him by saying that she and Kris "called a truce" the way that Berdly called a truce with Kris, and logically says that if they all have a truce, there's no reason for them to fight. Berdly doesn't listen; he mistakenly thinks that Kris has brainwashed Noelle into serving them, and tries to "free her" by defeating them both in battle. And unlike Susie and Lancer, he can actually kill you both in the battle. His tornado attack is difficult to avoid, meaning Noelle will likely get smacked in the face with it and react appropriately: with shock and disbelief that someone she considers a friend would try hurting her. At one point in the battle, Noelle screams at Berdly to stop hitting her, but he's so caught up in his delusions that her pleas fly right over his head as he continues to attack her.
  • The concept of challenging a Superboss is questioned. Susie points out that actually getting to fight Spamton NEO involves doing many foolish tasks for an Obviously Evil taskmaster, disturbs the whole party with Surreal Horror, and nearly gets Kris killed — and all of this was the player going well out of their way for no obvious reason.
• Deliberately Painful Clothing: The ThornRing item that Spamton sells Kris on the Weird Route is explicitly described as injuring the wearer, cutting maximum HP to a third of its normal amount in exchange for halving the TP cost of ice magic. Naturally, the only character who can actually use it is Noelle, tying in with the route's emphasis on abusing her.
• Denser and Wackier: Though the alternate route goes in a much darker direction for Noelle, it also elevates Spamton from a side-character to the Big Bad, turning the final battle and much of the last act much more surreal. A line of in-game code even calls it the "Weird Route".
• Deus ex Machina: Simultaneously Played for Laughs and Rule of Cool in the Palace, where Queen traps the Fun Gang in a huge locked room full of closed serving trays, only one of which contains the key out, and the trays rearrange themselves after every few tries. But as it turns out, the Annoying Dog, Toby Fox's Author Avatar, resides under one of the trays, and awakening it will allow the gang to climb on its tray and ride it as it rampages through the room, breaking the door, and then even further into the castle.
• Difficult, but Awesome: While using Group Loosen against Queen frees Berdly by 15%, using Throw and Ralsei's Loosen has the potential to do over 15%, but you have to play a throwing minigame.
• Distracted by the Sexy: In the epilogue, it's heavily implied that Alphys crashed and wrecked her bike because she was ogling the "eye candy" (read: Undyne) while riding it.
• The Dog Bites Back: Downplayed in the Pacifist Route. Berdly has been condescending towards Noelle, and admits after a Jerkass Realization that he was using her smarts to further his own ego. Then he attacks her when mistakenly thinking that Kris had brainwashed her while saying that he and Queen would create a new world. After all this, and Berdly's attempts to apologize go badly because he thinks that Noelle had a crush on him and is oblivious that she wanted to spend time with Susie, Noelle responds by grabbing him and shaking him in disbelief. Later, as Queen shuts down, Noelle refuses to help her by saying that she doesn't like being forced into a bad situation.
• Does This Remind You of Anything?:
  • The Weird Route is uncomfortably similar to an abusive relationship. Two partners enter into a friendly relationship, only for the abuser to continually pressure the victim into doing things that go against their interests. All the while, the abuser slowly breaks down the victim's confidence and self-esteem before the victim finally snaps and becomes completely dependent on their abuser to function. The number of extremely creepy things the player can make Kris say (such as saying they're "more than friends" or that Kris came to see Noelle in the hospital out of their own volition) portray this relationship as more like master and servant than two friends.
  • You can see it on the Pacifist Route with Noelle and Berdly as an analogy for a toxic relationship. While Noelle is more than fine with hanging out with Berdly, she finds his arrogance off-putting as much as Kris and Susie do. Queen kidnapped them both and offered them the chance to make a new world; Berdly took to it while Noelle had the sensible decision: RUN! When Berdly sees that Noelle and Kris have made a truce, he mistakenly believes that Kris brainwashed Noelle and attacks them. Noelle attempts to reason with him, pointing out that if they all made a truce with each other, then there's no reason to fight. Berdly is jealous and proceeds to hit her in the face with a wind attack. Noelle's response is shock and disbelief, and it's implied Kris believes that what Berdly did was not cool given how they stand during battle. It's analogous to how friends may believe they're doing the right thing by hurting someone they care about deeply. Noelle eventually gets the courage to stand up to Berdly and call him out for how he claims they're friends but he still hurt her.
• Doppelgänger Gets Same Sentiment: Subverted. Despite Ralsei bearing a physical resemblance to Asriel, there are indications that Kris knows the dark prince is not their brother.
• Door to Before: Queen's mansion has several bookcases that enable fast travel to an earlier floor. Checking the earliest bookcases lampshades this, while a later one defies this, preventing Kris and Ralsei from leaving part of the mansion without Susie.
  (There is a book here about shortcuts that open up later.)
  (There's a book here about preventing backtracking.)
• Double-Meaning Title: The BGM playing when Ralsei explains to Queen and the Lightners about the Roaring is called "The Dark Truth". The truth in question is dark both in the senses of being bad news for the one hearing it and of being related to metaphysical darkness.
• Dream Deception: When talking to Noelle, Susie tells her that the Dark World is just a dream she's having. This deception spreads to Berdly when he wakes up but can end up being dispelled if the player visits Noelle in the Light World with her watch after the Weird Route.
• Dream Emergency Exit: Discussed. After Susie tells Noelle that it's all a dream, Noelle responds that it's time to get back to her project, and orders Susie to hit her with her ax to wake up. Susie instead offers to spend a bit more time with Noelle, which she accepts.
• Driving Question: Who keeps making these Dark Fountains? And why? Why does Queen want Noelle specifically to open a new fountain?
• Dual Boss: The heroes' confrontation against Queen on the roof of her mansion takes the form of a fight against both her and a hijacked Berdly; ending the fight through mercy requires freeing the latter.
• Duel Boss:
  • After Queen's car gets stuck in traffic, she sends Kris out to clear it, but holds Noelle back from joining them. This forces Kris to enter battle against Spamton alone.
  • The final boss of the alternate route is normal-route-superboss Spamton NEO, except this time he's fought with only Kris. To compensate for the lack of party members, Kris's Attack command deals extra damage, they gain two special abilities which either deal double damage on top of the attack bonus or provide a massive heal, and the difficult part of the fight ends at 10% HP.
• Dumbass Has a Point: Invoked; Berdly knows that something is wrong if Susie is sounding like the Only Sane Woman of the party. Her ridiculous solution to solve a seemingly unbeatable puzzle actually works and breaks him. Susie also calls him out for how he doesn't really treat Noelle as a friend, for all his claims that he and Noelle are a team. She points out that she's only a dumbass by comparison, but being a dumbass is not the same as being stupid.
• Early-Bird Cameo: Queen's vector head in the intro later shows up in Queen's fight as an attack.
• Earn Your Bad Ending: There's a secret Genocide Route equivalent in Chapter 2, but it's much more difficult to undertake than the one in Undertale, requiring numerous specific character interactions, significant backtracking, buying and equipping a special expensive item, and only using one attack repeatedly in every battle, on top of causing the otherwise mostly whimsical and goofy story to do a 180 into nightmare territory and end on a very sour and unsatisfying note wherein the day is saved but Berdly is heavily implied to be dead in the Light World after the Dark Fountain is sealed and Noelle is irreparably scarred for life by the whole experience.
• Easter Egg:
  • Near the beginning of Chapter 2, when the street is blocked by the traffic pileup, if you listen carefully, the themes "Your Best Friend", "Spear of Justice", and "Dogsong" can be heard in the car honks. After waiting long enough, all the cars will eventually go silent, until the silence is broken by one car honking the intro to "Metal Crusher", Mettaton's first battle theme from Undertale, after which the cars go back to honking again.
  • Exactly one of the background doors in the Cyber City is interact-able; it doesn't look any different from the other doors, and gives you nothing for finding it. The Flavor Text simply points out your dedication for somehow discovering it.
  • If you have the LoadedDisk and never purchased the mannequin from the Addison in Cyber City, it will give you an option to insert the disk into the mannequin. However, it will fail, apparently because Spamton himself rejects being inserted into an unsuitable vessel.
    (The LoadedDisk squirmed and won't fit!)
  • Should you make it through the driving section without hitting any of the other cars on the road, then you'll find a tiny car with legs has come to live in Ralsei's kingdom at the end of the chapter.
  • One that was only documented almost a year after the chapter's release: if you manage to recruit Tasque, Poppup, and Maus, but not Tasque Manager, they will wander around in a circle beside the giant door in Castle Town; Tasque especially having gone stray without its master.
• Eek, a Mouse!!:
  • Noelle is rather scared of the Maus enemies and the mice used in the "Annoying Mouse Room" puzzles. A few of the puzzles actually involve exploiting the fact Noelle will leap in the air with fear when one of the Annoying Mice touches her. She eventually gets over this fear as part of her Character Development.
  • Later in the game, a few Swatchlings are scared of a Mauswheel.
• Eldritch Location: Queen's mansion's basement. It's a dark place whose soundtrack is only a drone, where treasure chests only have mayflies on it, and where lamps suddenly attack you. The west room is the worst: you enter it, you go to the left, only to see nothing. You go back, but the door disappeared. You return where you came from, and if you pay attention, you can see the big smile of an unknown creature watching you from the shadows. Then a teacup arrives, and when you go down without any problem, you are suddenly attacked when you try to get up. It's unknown if the place is corrupted of if the sudden changes are due to Spamton's influence.
• Embarrassing Cover Up: Noelle interrupts Susie and Kris as they're about to enter the portal to the Dark World, and Susie tries to tell her they have plans. When she asks Kris to back her up, the only options you have are "Hanging out in a closet alone" or "Crime".
• Empty Shell:
  • Implied. When looking at the mirror in Kris's house, the text has changed from "it's only you" to "it's what they call 'you'". With the ending of Chapter 1 having Kris rip the SOUL out of their chest, it's implied to be the case.
  • Returning to the light world after the Weird Route reveals that Berdly hasn't turned to dust, implying his body is alive, but his mind is gone.
• Entertainingly Wrong:
  • After being confronted by her in front of the entrance to the Dark World, Susie notices that Noelle was nervous, blushing, and hoping to do homework together. Susie slowly builds up to the conclusion that Noelle must be onto their secret identities. The thought that Noelle might like Susie never occurs to her.
  • Berdly, on the other hand, is able to correctly deduce that Noelle has a crush on someone… but thinks that it's him. As a bonus, Noelle initially thinks that Berdly has figured out that she has a crush on Susie, and is dumbstruck when he reveals the actual conclusion he came to.
  • After the first fight with Queen when Berdly tries to get Susie to do a True Love's Kiss ploy only for her to ruin the moment by pointing out she couldn't hear what he said, Berdly notes aloud that Susie's heart is beating for love after she moves forward. While he's not wrong, he thinks that it's her crushing on him, rather than Susie starting to comprehend and return Noelle's interest after the Ferris wheel scene.
• Even Beggars Won't Choose It: If you go back to the Addisons' shops after fighting Spamton NEO, there will be a Virovirokun outside the shop that sells the mannequin, who states their intent to rob the store with the Addisons gone to the dump, only to decide against it because the products are of such poor quality, they feel like they're being ripped off even when they're stealing the items.
• "Everybody Laughs" Ending: As Susie pushes Kris towards the fountain to escape the topic of her tail, Ralsei, Noelle, Berdly, and Queen are seen laughing.
• Every Car Is a Pinto: While riding in a car with Queen and Noelle, the former orders everyone to get out, then the car explodes. Turns out Queen was nervous about the fact that the car hadn't exploded yet.
• Everyone Has Standards: The entire party — Susie, Kris, Ralsei— doesn't have a response when Queen lies that she's going to toss Berdly in the acid river via Exact Words to force Noelle to surrender. Notably, Susie doesn't say anything when Noelle goes to Queen's side and apologizes to her friends, and tries to run back to them when Berdly returns. Sure they don't like Berdly, but none of them want him dead. It makes Susie calling him out later for his arrogance and how he treats Noelle more poignant.
• Everything Fades: An aversion — Noelle's IceShock leaves its victims trapped in a block of ice on the overworld until you return to Hometown, never despawning under any circumstances otherwise.
• Evil Is Deathly Cold: Noelle is capable of using the IceShock spell, which can freeze enemies solid. While Noelle herself isn't evil, her ice magic can only be brought to its full potential in the chapter's alternate route, which requires the player to psychologically abuse her into becoming a living weapon with the help of the opportunistic manipulator Spamton. The route culminates in her freezing Berdly with the "fatal" spell SnowGrave, allowing Spamton to take over the Cyber World.
• Exact Words:
  • If, at the beginning of the game, Kris responds to the obvious Dark World in the Librarby computer lab by pointing out they and Susie could go to the Dreemurr's house and work there, Susie will admit that Kris is right — that is, that Kris just made a factually accurate statement. But she's still gonna jump in.
  • When Queen lies, her face gives it away with a giant red "LYING" that appears. She convinces Noelle to join her by implicitly suggesting she'll kill Berdly if Noelle doesn't become her minion, with her face showing "TRUE" to suggest it's not a bluff. Specifically, that "A Certain Bird Might Take A Ride In The Acid River". However, she didn't mean Berdly at all — she meant the swan boats in her mansion used to traverse the acid river. Checking Kris's boat after a giant hand blocks it generates the text "(Looks like a certain bird is having a ride on the acid river.)"
  • Spamton's "S. POTION" is described as "AFFECTS HP A LOT". After you buy it, it turns out to actually be "S. POISON" and affects your HP by decreasing it when used.
  • The Weird Route exploits the game's Arc Words, "your choices don't matter." Nobody said anything about other people's choices, and indeed the route revolves around grooming Noelle into a killer by manipulating her decisions.
• Face Palm:
  • Toriel does this when she finds out that Kris ate all of the pie she was saving, complete with a loud slap sound effect when she does.
  • Queen does this when she realizes she completely forgot about Ralsei, and thus only has enough capture cages for the Lightners.
• Fairy Tale Motifs: Fittingly for the chapter that first makes Noelle playable, the Dark World plotline has similarities to The Snow Queen, as well as elements drawn from The Chronicles of Narnia inspired by it. Queen herself plays the Affably Evil title role, with Berdly as Kai (though, like Edmund, he willingly joins the villain) and Noelle as Gerda (at one point she even rides a sledge like Queen's and Witch's). If December turns out to be Noelle's sister, it might even be pointing to a Frozen (2013) reference as well.
• Fantastic Fireworks: Bringing the blue checkmarks to the Hacker results in fireworks in the shape of Kris, Susie and Ralsei's faces. These fireworks reappear in the normal route as part of Queen's "TenderGoodbye.EXE" program.
• Faux Computer Code: In the Japanese version, Queen's dialogue is written <!--as HTML comments.-->
• Ferris Wheel Date Moment: Susie and Noelle end up riding a giant Ferris wheel while helping Noelle escape, and the two have a heartfelt talk together. Susie even hangs a lampshade on how the cars on the Ferris wheel are all shaped like hearts.
• Fission Mailed:
  • If you attempt to buy four-hundred bagels from K_K, the screen cuts to black and the text will state you were crushed under the weight of four-hundred bagels and instantly defeated. It then cuts back to state that was a joke; you just can't fit four-hundred bagels in your inventory.
  • One interaction in a well-hidden alleyway ends with Kris getting "run over" by the Annoying Dog in a toy car, which leads to the Undertale game over screen, complete with "Determination" playing. Then the Annoying Dog runs over the words "GAME OVER", and Kris wakes up in the alleyway.
  • The only way to win against GIGA Queen is to force her to cheat. You need to beat her mecha in three rounds. Just as she shuts down, she decides to go for Taking You with Me; her robotic hands detach and grab the heroes. As they struggle, Queen threatens to squish them unless Noelle opens a Dark Fountain. Noelle ends up saving the day; she refuses to help Queen, calling her a bully. She says that she's tired of being pushed around with her friends used as collateral.
• Five-Second Foreshadowing: When Toriel tells Kris to wash their hands, interacting with the kitchen sink will instead prompt you to go to the bathroom, and interacting with anything in the bathroom will say that you have "no need for it", foreshadowing the imminent loss of control over Kris when you do interact with the sink. The game even straight-up prevents you from leaving the bathroom until you interact with the sink.
• Foreshadowing:
  • To railroad Kris into entering the Librarby and starting the chapter's Dark World, a traffic jam blocks off most of Hometown after school. Navigating through heavy street traffic ends up being a major component of the Cyber City area, and Queen states that she believes Lightners love traffic because they constantly look it up online, explaining why the streets of her world are so chaotic.
  • At one point, when Berdly sees Kris (actually Noelle, but he doesn't know) completing a puzzle, he brushes it off by saying "a broken clock is right once a day", instead of twice. Earlier, he falls for Queen's Blatant Lies that she's just the sounds of the city while hiding from him. Later on in the game, after Susie solves a puzzle, he confesses that he is not that smart, only getting ahead because of Noelle studying with him and trying to live up to others' heightened expectations.
  • At the beginning, trying to wash Kris's hands on the bathroom nets a remark from the narrator that it's not yet the time for that. Kris pretends to wash their hands there in the ending when they're actually about to jump out the window and do something sinister.
  • In the Cyber City, at some crossings you'll find Swatchlings blocking the road. Talking to them will make them say that something "big" is coming. This foreshadows the final battle of the pacifist route, where Kris and co. and Queen duke it out using giant mechas in the middle of the city.
  • Queen is able to blackmail Noelle into joining her by threatening to send Berdly into an Acid Pool if she doesn't. The others assume she must have captured him while they weren't looking, but only too late does Berdly himself walk up, totally uncaptured. Later, Berdly constructs a plan to help the heroes defeat Queen, only for the plan to be foiled when Queen captured Berdly while they weren't looking.
  • The poster after Spamton's fight reads "BIG SHOT AUTOS! TAKE A RIDE AROUND TOWN IN OUR SPECIAL" before being cut off. Later, when you talk to Spamton about the deal in his shop, he says that, if Kris goes through with the deal, the both of them will be "TAKING [ A Ride around Town on Our Specil Cungadero]". Spamton NEO's fight takes place on a set of rail lines running outside a rusty city.
  • A similar example is when Spamton is explaining his deal to Kris, in which he quite literally tells them that the deal will cause them to "[die]". This is his least nonsensical line during the exchange, which obviously foreshadows the proceeding battle.
  • An optional room in Queen's Mansion has three Swatchlings watching a movie about how the Knight created their Dark World by opening up its Fountain. At the end of the Chapter when Kris and Susie are having a sleepover at Kris's house, they start to watch a giant monster movie marathon on TV… and then promptly fall asleep, with Toriel following soon after. Eventually, however, Kris wakes up, separates themself from the SOUL again, and opens up a new Fountain in the living room while everyone else is asleep. The now static-y TV grinning during this also hints that the next Dark World will be television and/or movie-themed.
    • Earlier, when entering the Dark World in the school closet with Susie, the transition strongly resembles entering the Midnight Channel in Persona 4...which is done via entering TVs.
  • Before the final battle, Queen uses neon lights in the sky to show how the Roaring Knight makes new Fountains by plunging a blade into the earth. The appearance of the Knight's "blade" is that of the knives associated with both Chara and Kris, foreshadowing that Kris at least can open Fountains before they apparently do so at the end of the chapter.
  • One of the possible messages that appear while fighting against Poppup states "you unconsciously clicked on a popup about demon summoning classes for teens." This is a two-part subtle foreshadow towards both the reveal that opening up too many Fountains will bring about world-ending beings, and the cliffhanger ending which apparently shows Kris doing so.
  • When Noelle tags along with Kris, checking on Lancer will have him wonder if they can turn her into a bad guy. With enough effort, they can. As Noelle goes into a dark path, the narrator starts declaring she's "becoming strong" from battles, which was a mechanic alluded to by a hint book earlier in the chapter. The Weird Route is also foreshadowed with the ability to "Proceed" past the first Annoying Mouse room even in a good route playthrough, and Spamton references his Thorn Ring as a "commemorative ring" if the player defeats him through FIGHTing.
  • Talking to Sweet Cap'n Cakes in their junk shop and asking about their "Junk Work" has them comment about two off-key clients they had: A weird guy who wanted them to sneak into Queen's mansion, and a man of high-class who spoke in a way they could barely understand and gave them blueprints. These clients are Spamton and Rouxls. The jobs the two had hint at Spamton's request to Kris in his own shop, and Rouxls having the Thrash Machine built.
  • You can catch a glimpse of GIGA Queen at several points throughout the mansion, long before Queen brings it out for the final battle. The legs are found in the middle of the lobby, you can see it leering at you from the background on a second floor walkway, and its hands serve as an obstacle while Kris and Ralsei are navigating the acid river. Queen acknowledges this after she gets into the cockpit:
    Queen: Seems That You Failed To Notice The Giant Freaking Robot In The Middle Of My Palace
  • When you enter the Cyber World, a little glimmering object can be seen drifting away from Kris. If you think to check your inventory when you first arrive in the area, Lancer notes that Rouxls fell out of Kris's pocket. He appears in the chapter way later on.
  • The mannequin you can purchase from the Addison in Cyber City is shaped exactly like Spamton and is seemingly just as useless as the junk he sells. This very subtly indicates to the player that the mannequin isn't entirely useless in one way that relates to him; if Kris equips it before the fight with Spamton NEO, it will reduce damage by 35%.
• Freeze-Frame Bonus: During the two-path puzzle, both Kris and Noelle can pass behind screens that turn them into silhouettes. One of these screens near the end of the puzzle instead has Noelle become a silhouette of her younger self that we later see during Berdly's story about the spelling bee.
• Frothy Mugs of Water: Parodied with Queen's wine glasses of green liquid, which she admits are "all-ages appropriate glasses of pure battery acid", not alcohol.
• Fun with Acronyms: "DDoS" here stands for a Dozens and Dozens Of Shovels attack.
• Game-Breaking Bug:
  • At one point, Noelle and Kris walk on two sides of a path in what amounts to an interactive cutscene. This interactivity is briefly dropped as Noelle jumps back over to rejoin Kris, but if Kris is standing too close to where she lands, Noelle will disappear and the cutscene will fail to progress, soft-locking the game. This appears to have been patched out, fortunately.
  • In the 1.09 patch, thanks to an oversight, merely dying in certain areas would respawn Kris one room ahead of where they should be in the internal room order. This caused all sorts of problems, from skipping boss fights to softlocking the player, potentially permanently if they found a save point. Thankfully, another patch was quickly released to fix this, though.
• Gaslighting: Kris (or rather, the player acting through Kris) manipulates Noelle on the SnowGrave route by playing into her Nice Girl and Extreme Doormat attitude, make her entirely dependent on them, and prey on her fears to make her obedient. As a result, Noelle becomes a mindless puppet who kills on command, even when she knows it's wrong.
• Genre Shift: If you choose the Weird Route, the chapter's genre goes from a lighthearted comedy into a Psychological Horror. This somewhat lets up when Noelle leaves, and the genre turns into something more akin to highly subdued regular horror, but the psychological part returns if the player chooses to interact with Noelle in the Light World.
• The Ghost: As Noelle gets more development, she speaks about her older sister "Dess" who used to hang out with Kris, Asriel, and Noelle. Various hints throughout the chapter imply that Dess is short for "December". However, the only reference to Dess in Hometown is a doll that she and Noelle made together as kids that Rudy keeps in his hospital room, and in fact it appears Dess is now completely absent from the family's life. The fact that the word that caused Noelle to freeze up and lose the spelling bee in Berdly's backstory was "December" implies that something happened to Dess, but the exact circumstances have yet to be revealed.
• Giant Medical Syringe: Susie brings one out whenever she dresses up as a nurse to give the Virovirokun "tender loving care", as per the ACT command. There's also the enemy Ambyu-Lance, an antivirus program with a giant syringe for a head, topped with a siren light.
• Gilded Cage: Unlike the jail cells she puts Kris and Susie in, the room Queen provides Noelle with is pretty nice, having a comfortable bed and filled with things she thought she'd like. Completely misguided, of course, and Noelle still intends on leaving as soon as she can.
• Goroawase Number: Used in the Japanese localization:
  • The enemy Ambyu-Lance is renamed to "Q-9"; it is pronounced "kyūkyū", which is a play on the Japanese word for ambulance, "kyūkyūsha" (救急車).
  • Spamton always refers to himself with the overly formal and old-fashioned first-person pronoun "watakushi" — however, thanks to his Electronic Speech Impediment, instead of the standard spelling (私 or わたくし), it's spelled "ワタ94".
• Greater-Scope Villain: The Queen reveals that she didn't create the Dark Fountain; a mysterious figure called the Roaring Knight did.
• The Greatest Story Never Told: Susie laments to Kris after they return back to the computer lab that they saved the world and no one will know about it (since Berdly and Noelle convinced themselves it was only a dream), but states that it's probably for the best, so that no one will know the world was in danger in the first place.
• Guide Dang It!: In contrast to the rest of Chapters 1 and 2 where normally choosing to resolve fights by either attacking or pacifism had no major impact on future gameplay, resolving the Spamton fight by attacking prevents him from appearing later in the game, thus locking the player out of his sidequest and thus the superboss accidentally.
• Hard Truth Aesop: Both the Normal Route and Weird Route have this: toxic friends need to be identified immediately and it's better to get away from them before they traumatize you. Alternatively, rout their behavior if you can and call them out. Susie says as much when reading Berdly the riot act.
  • Berdly does not realize that he's a bad influence on Noelle, in the sense that he forces her to do what he wants rather than listen to her. He does admit, however, that he was using her to get better grades since she was the smart one. It takes Queen planning to robotize Noelle and lock up Berdly for him to realize what he was doing.
  • If a player chooses to gaslight Noelle into freezing monsters with IceShock and eventually Berdly with SnowGrave, you end up becoming the villain of the story. Noelle ends the chapter traumatized and running away from Kris.
• Harmless Freezing: As a Snowcaster in the Dark World, Noelle gains access to an offensive spell called IceShock. If an enemy's HP is reduced to 0 by it, they end up frozen solid instead of running away. This turns out to be an Inversion played for very bleak drama — not only will frozen enemies never thaw out, it's also the only way to bypass the game's enforced Non-Lethal K.O..
• Heartbeat Soundtrack: Berdly's Battle Theme Music, "Smart Race", has a heartbeat-like beat in the background. His second fight normally just uses "Smart Race" again, but on the Weird Route, the theme will instead be "berdly_battle_heartbeat_true"^note As described in the game files; it does not appear on the soundtrack, a slower and more menacing tune that brings the heartbeat beat to the foreground.
• He Cleans Up Nicely: The Butler posse Squee over Ralsei in his butler outfit, which looks like a green tuxedo. Ralsei admits that it's a nice fit. Susie tells him no time for a fashion show, they have to save Noelle!
• Height Angst: Played for Laughs. Queen unveils a two-player arcade machine to fight against her with and Kris steps up to it only to find they're both too short to reach the controls and not strong enough to use them. They collapse on the floor in utter despair.
  Ralsei: Uh... um... it's okay, Kris... err... I'm short, too...
• Hope Spot: In the Weird Route fight against Berdly, if you allow Kris to get knocked out, Berdly will tell Noelle that she's free and can return to herself now... but she tells him that she can still hear their voice.
• Humongous Mecha: The final boss fight against Queen has her in a giant version of herself disguised as a statue in her mansion. The heroes fight against it with their own one made of out Berdly's statue with the help of everyone they may have spared along with the Thrash machine as a head.
• Hurricane of Puns: If you enter Sans' grocery store, you'll witness Toriel purchasing eggs from Sans, resulting in a rapid-fire exchange of egg-related puns between the two. It segues directly into Cringe Comedy when Asgore bursts in with an awkwardly shoved in "Eggs-Husband" pun.

I-P

• I Ate WHAT?!: Hanging onto a Darkburger or Hearts Donut long enough through Chapter 2 for Noelle to eat one has her respond with shock to the realization that they're respectively made of real meat and filled with blood.
• I Choose to Stay:
  • Subverted. After she's defeated, Queen stops trying to control Noelle and instead tells her to choose what makes her happy. When she thinks about it, Noelle realizes that the Dark World let her have an adventure with her friends. Susie and Berdly agree with that sentiment and prepare to create another Dark Fountain. However, Ralsei stops them before they can, revealing the consequences of opening too many Fountains.
  • Played straight with Nubert if you don't recruit every enemy in the Cyber World. He'll only come into your city if everyone else does; otherwise, Queen will ask about his absence, to which Trashy points out that Nubert had chosen to remain in the Cyber World.
• Iconic Sequel Character: Spamton has quickly risen to far eclipse Jevil as the most popular character from the game, and (at least within the fanbase iself) potentially even rival Sans as one of the most popular characters from the series, but he was only revealed in Chapter 2, over 3 years after the game's first chapter released.
• I Have This Friend: A monster in Cyber World asks how to deal with existential dread, on behalf of a friend who looks and sounds exactly like them. Said friend pops out of a door a moment later, cheerfully identifying themself.
• Implied Death Threat: When Noelle refuses to join Queen's side outside the mansion, she threatens her that "IF You Don't Listen THEN A Certain Bird Might Take A Ride In The Acid River". After Noelle gives in to Queen's demands, Berdly immediately barges in.
• I Need to Go Iron My Dog:
  • Noelle walks up to Kris and Susie before they enter the closet. When Susie asks for help coming up with a lie, the choices are between "hanging out alone in the closet" and "crime". Either way, Susie awkwardly stammers over her words in order to convince Noelle to leave.
  • In epilogue dialogue between King and Queen, Rouxls Kaard will interject to state that "Queene hath a nyew Man about Towne now" while winking. When they both ask who that is, he'll awkwardly stammer out that he "left my puzzle on" and run away.
• In the Dreaming Stage of Grief: After the Weird Route, Noelle will convince herself that the whole thing was just a dream and that Berdly is only sleeping — but she's still deeply uncomfortable around Kris, finding their voice alone deeply terrifying, and it only gets worse if she notices they're wearing her watch now...
• Insult Backfire: Defied. Queen claims that teens are merely big children (and adults are even bigger children). Susie then points out that it makes Queen a child as well… except Queen is actually a computer, which is neither a child nor an adult, so it doesn't count.
• Interesting Situation Duel: The first Berdly fight and the Spamton NEO fight both take place while riding a set of train tracks.
• The Internet Is for Porn: If the book Asriel indefinitely borrowed from the Librarby is any indication, he seems to have a thing for purple dragons. In chapter 2, when Queen creates a room based on his internet history, Kris will only open the door with their eyes shut and the contents anger Susie (a purple reptilian herself), implying his search history is… less than savoury.
• Iris Out: After Queen captures Noelle, Susie, Kris, and Berdly, she admits she doesn't know what to do with Ralsei, then the Iris Out closes on her face as she laughs, complete with a sound effect similar to the one used in Super Mario World.
• I Take Offense to That Last One: During Queen's conversation with King in his jail cell, she'll comment on his nice giant hamster wheel, which he takes apathetically as insulting sarcasm. She insists it was a sincere compliment. But when she actually goes to insult his hanging water bottle, though…
  King: DO NOT SPEAK ILL OF THE ROYAL WATER BOTTLE!
• I Taste Delicious: Inverted. One Addison sells "Own Flavored Tea", a type of tea whose taste embodies the party members with a fitting flavor attributed to them. If a character is made to drink their own flavor, they say it's just water, while other members describe what they can taste in better detail.
• It's Quiet… Too Quiet: Susie notes that the library is empty. Sure it has to be quiet for the other patron's benefit, but there are usually monsters. What's with that portal in the computer lab?
• "Just Frame" Bonus: The Mecha fight's version of the Graze mechanic has the player dodge Queen's attacks at just the right moment for bonus TP.
• Joke Item:
  • Spamton offers to sell the party a weapon he calls "The Big One", which apparently increases the holder's Attack stat by a 25-digit number with the item description "CUT ANYTHING 2 PIECES! CRIMINAL!". In reality however, the item is a "Broken Sword" which itself has been cut into 2 pieces, and it's completely unusable by any party member.
  • Spamton also offers to sell the party an "S.POTION", with the item description including the line "Affects HP a lot". In reality, the item's name is "S.POISON" and deals 20 damage to the user.
• Karmic Jackpot: Recruited enemies will come back to help you form the mecha you need to fight Giga Queen in the end. The more you recruit, the stronger the mecha formed, and if you recruit every Cyber Creature in the chapter on the normal route, your Thrash Machine gets the most HP possible.
• Kids Driving Cars: After forming their truces, Queen pulls Kris and Noelle (in disguise) into a car to get away from Berdly while they're all trying to look for Noelle. She decides to have Kris do the driving the whole time, leading to a brief segment where you can send several cars flying (and also grab yourself a banana on the way). Going by Queen's comments, she'd also have Noelle do the reckless driving if she wasn't missing.
  Queen: Poor Noelle She Would Love Hitting All These Cars
• Kleptomaniac Hero:
  • At the start of the game, you have the option of checking Asriel's drawer and stealing $5.
  • When they reach Noelle's room in Queen's mansion, Susie and Kris decide to steal statues made from her search history for their rooms. Ralsei tries to dissuade them from stealing, but this falls on deaf ears; Susie nabs a huge axe-wielding statue made in her likeness, while Kris gets an Ice-E statue covered in fur, formed by Noelle's fear of Ice-E being a cryptid.
• Know When to Fold 'Em: Queen was unable to capture Ralsei since she only had four cages and used them to capture Susie, Berdly, Kris, and Noelle. Ralsei surrendered anyway because Queen was holding his friends hostage and pragmatically figured out that he would have a chance to rescue them while serving as part of her butler staff.
• Lame Pun Reaction: While Sans and Toriel are having a pun-off about eggs, Asgore barges in asking if there's any room for an "Eggs-Husband," which immediately kills the mood. It says a lot when Sans of all people finds it pathetic.
• Last-Second Ending Choice: Downplayed. If you defeat Queen by FIGHTing, then Berdly's arm will get burnt when taking off his wire, while filling Queen's mercy meter frees him safely. However, if you violently ended either of Berdly's two solo fights, you're locked into burning his arm no matter how you beat Queen.
• Layman's Terms: The first confrontation with Queen leads to this exchange between her and Susie:
  Susie: Nobody's turning anybody's face into a robot!
  Queen: Could That Be A Statement of Animous Dissension
  Susie: Huh?
  Queen: You Wanna Fight, Loser
  Susie: YES!!! YES, ALREADY, YES!!!
• Leaning on the Fourth Wall:
  • Susie comments that waiting to go into the Dark World again "felt like years", referencing the three-year gap between Chapter 1 and Chapter 2's release.
  • Similarly, if you ask Sans about seeing his brother, he'll say maybe you'll get to see them tomorrow… or another two years from now.
• Lethal Joke Item:
  • Rouxls Kaard brings the Machine to Thrash Your Own Ass with him through the chapter. If you picked the duck head for it, he'll only be able to fire a single, slow-moving projectile that is pretty much free Tension. When it becomes part of the mech for fighting Giga Queen, however, the duck head enables a useful powerup that drains HP from her on every hit.
  • The Mannequin sold by one of the Addisons and the Frayed Bowtie (initially sold as the "BSHOT BOWTIE" in Spamton's shop) offer practically worthless stats as armor. However, they serve situational use by reducing the damage taken from Spamton NEO's attacks. The Mannequin boasts a 35% decrease in damage while the Frayed Bowtie offers 15%. More bizarrely, they work against CAT-type enemies like Tasque Manager and the Tasques.
• Let's Get Dangerous!:
  • Sweet Capn' Cakes explains in the Main Route that they would like to rebel against Queen, but she's too powerful and will leave them alone as long as they're all talk. So they raise money for their cause and rock music. In the climax, Berdly reveals that he backtracked and told the rock robots that the heroes needed help, so they come along with every Cyber resident that you befriended. It turns out that the robots have been waiting for this opportunity... to turn everyone into a fighting mecha.
  • If you’re playing the Weird Route, when you encounter Berdly with Noelle, he will drop his jokey demeanor and seriously fight you to protect his friend... for all the good it does him. Notably, his attacks in that fight are substantially faster and harder to avoid, implying that he holds back in the game's normal fights.
• Let's Split Up, Gang!: Just after entering the Trash Zone, the gang encounters a fork in the road. You'll be prompted to pick a teammate to continue on with, only for Susie to choose for you by dragging Ralsei up the north path, while Kris encounters Noelle a short while into their solo journey.
• Let Us Never Speak of This Again: After fighting Spamton NEO, Susie will notice how strange and creepy the entire encounter was, and sees that Kris is freaked out. Ralsei simply responds that Spamton was probably just spouting nonsense, and tells them to just accept that he turned into an ally in the end.
• Lighter and Softer: Assuming you're not doing the SnowGrave route, anyway. While it does have some dark moments and an intense Cliffhanger, this chapter is overall much more comedy-focused and lighthearted than either Chapter 1 or Undertale. The main antagonist is a Cloudcuckoolander Well-Intentioned Extremist who makes a Heel–Face Turn upon realizing the potential ramifications of her conquest, the humor and overall weirdness gets dialed up to Rapid-Fire Comedy levels, and even the serious moments are generally less harsh than previous entries.
• Like an Old Married Couple: King and Queen's interactions, despite it being uncertain if they are actually married or not. Their sole conversation at the end of the chapter has them trading insults, but they have pet nicknames for each other (Kingy Wingy and Queenie Beanie) and they both talk about how King's son, Lancer, would be taken care of by Queen. Right before Queen leaves, she also asks King if he wants anything from the store.
• Literal Genie: Queen's provisions of items in personalised rooms based on the occupant's search history sometimes get corrupted due to spelling mistakes or literal interpretations, such as Kris having two Toriels playing piano due to searching for a "piano playing tutoriel" or Susie getting a book with a vacuum attachment due to a random search rant that the "librarby sucks".
• Logical Latecomer: When Noelle gets into a battle for the first time as a Guest-Star Party Member, she has no idea what's going on or what to do and is hopelessly confused when Kris tries to direct her to do something. It takes both Kris and the Virovirokun that they're fighting to explain things before Noelle gets even a basic idea of how everything works.
• Look Behind You: After losing control over Berdly, Queen tells the gang to look behind them as she escapes.
• Loophole Abuse:
  • Your choices don't matter… but others' choices do, and you can manipulate them into doing certain things that matter.
  • Unlike Undertale, it's specifically emphasized that you can't kill an enemy by fighting it down to 0 HP — they'll just immediately flee the battle instead… But you can kill enemies by using a spell to freeze them solid.
• Meaningless Villain Victory:
  • Whether or not you win or lose the miniature house battle against Rouxls Kaard is rendered moot when he's Taken for Granite like Lancer just as he's about to fire the Thrash Machine's weapon.
  • Queen manages to defeat the trio's Combining Mecha in the final battle, despite their best efforts, but she immediately gives her plan up when Ralsei tells her what achieving her goal would actually do.
• Melancholy Moon: After being locked up in her room, Noelle looks at the baseball moon, thinks about all the experiences she's had in Cyber World, and wishes that Dess was with her.
• Mercy Mode: Losing to Spamton NEO decreases the effect of his rage at charged-shot spam in future rematches.
• Metropolis Level: A huge portion of Chapter 2 takes place inside the Cyber City, a sprawling metropolitan area with heavy traffic you have to traverse, bright neon lights advertising things, and Maus-infested alleyways.
• Missed Him by That Much: Noelle hides from Queen in an alley. Queen appears and asks Kris where Noelle is, but when Berdly approaches, Queen hides in the alley right above Noelle without noticing she is there.
• Missing Secret: Malius' crafting list is this in the context of the demo. The final item they offer, the Twisted Sword, requires a Thorn Ring and a Pure Crystal to make. While the Thorn Ring can be found and brought to Castle Town with preparation^note Progress far enough to buy it on the Weird route, then spare Berdly and transition back to the normal route so that Noelle won't take it with her, the Pure Crystal isn't legitimately available in either chapter, being buried in the game's code.
• Mondegreen Gag: Berdly says that his power as a "Light Nerd" is key to bringing about his Utopia. When Ralsei asks whether he means Lightner, Queen replies that she intentionally told him it was "Light Nerd".
• Mood Whiplash:
  • The tone of the chapter dramatically shifts from comedy to horror if the player chooses the Weird Route. Chapter 2 is almost completely an absurdist comedy that even goes into Rapid-Fire Comedy territory in some parts, making the tone shift all the more jarring. The Weird Route is straight-up Psychological Horror as Noelle gets abused and manipulated to be a murderer in a disturbingly realistic way, all while the player gets glimpses of her inner thoughts and sees her rapidly-fragmenting psyche.
  • After the first battle with Berdly, there's a touching After Action Patch Up scene where Susie takes an interest in learning healing magic after Ralsei tends to her injuries. Right after this, you'll run into a goofy-looking talking trashcan who tries to give you a tutorial on the item storage system, spoiling the mood and annoying both of them.
    Susie: Uh… yeah, not now dude.
    Ralsei: It was sort of an emotional moment…
  • The tragic scene where Spamton gives his final speech without his usual Electronic Speech Impediment after defeating his NEO form in the normal route becomes this if you fill Kris' inventory to prevent obtaining the Dealmaker/PuppetScarf, as he berates the party in his usual manner of speech.
    * (You got Dealmaker/Puppet Scarf.)
    * (... but your inventory was full.)
    Spamton: ... Kris...? Kris!? KRIS!?!?!?
    YOU FILLED YOUR [Inventorium] WITH [Half Pr1ce Sallamy] JUST TO KEEP ME OUT!?
    WHAT! THE! [F
    ifty Percent Off]!?
    YOU CAN CARRY LIKE 48 ITEMS!!!
    [Why] DID YOU DO THIS?! WHY?! [Y]?! [Yellow]?! [Gamma]?!
    NOT [Cool] KRIS! I'LL BE IN MY [Trailer]!
    [Spamton's item form slides out with the same slide whistle effect as Mad Dummy]
• My God, What Have I Done?:
  • Downplayed. After Ralsei reveals what happens if there are too many dark fountains created, Queen is clearly shocked by this revelation and changes her mind about her plan, commenting that she didn't want to destroy the world, prompting her to perform a Heel–Face Turn.
  • Played straight in the Weird route; after you goad Noelle into killing Berdly, she takes a second to realize what she's done and just breaks, wandering offscreen and not re-appearing until the Fountain is sealed off.
  • Even Kris is heavily implied to have a similar reaction when you reunite with Ralsei and Susie after the "fight" with Berdly in the Weird Route. They'll both note how Kris looks really hurt, almost certainly from the distress of being forced into such a horrible situation.
• Mythology Gag:
  • In the Cyber Field area where Cap'n and K_K are selling CD Bagels, one of the citizens complains how round dough products such as bagels and doughnuts are always so expensive. In Undertale, Spider Donuts cost a ludicrously high amount when buying from Muffet.
  • One of the speak-and-spell keyboard puzzles in the first area is the gibberish line from Sans' word search in Undertale. Susie even jokes about there being a letter missing, making the puzzle impossible, just like the word search. This time it is actually solvable (and must be solved to get the Hacker on your side) and flashes a picture of Ice-E before it glitches out and displays the checkmark Hacker was looking for.
  • One of the objects in Noelle's room in Queen's mansion is another cameo of Ice-E, except this time it's covered and fur and looks… disconcerting. Apparently, Noelle was convinced Ice-E is a real cryptid and searched for it online.
  • There's a well-hidden alleyway in the room with multiple lines of fast-moving traffic, if you go down there on a normal run (On the weird route, this is where Spamton tells you how many enemies are left), you walk down a road only to get ran over by the Annoying Dog in a plastic child's push car until it kills you… which then displays the Game Over screen from Undertale, complete with "Determination" playing instead of the normal game over music… before the dog runs that over too, making Kris wake up in the alleyway.
  • One of the possible in-game flavor texts when battling Ambyu-Lance mentions that they compare battling Kris's gang to a dentist visit. In Undertale, Asgore tries to calm Frisk down just before his boss battle by suggesting that they think of it as like a visit to the dentist.
  • A very subtle one, but when the Swatchlings turn blue, their attacks are subjected to gravity, just like the blue SOUL mode.
  • The Wet-Nose Bandits will say to make "Dog Marriage, not Dog Jail!" "Dog Marriage" comes from a sign in Undertale.
  • When you talk to Undyne about nothing, she says "At times like this… Punks like you should be home playing video games," a similar sentence to the ones found in Asgore's and Sans' speeches in Undertale.
  • In the convenience store, Sans suggests that Asgore talk to his plants to find out how to get back together with Toriel. Asgore replies that he already tried that, and remarks that flowers are good listeners, harkening back to the Echo Flowers of Undertale.
  • The police station has a song to play specifically for jailbreak situations that Napstablook switches on after Undyne accidentally releases the Wet-Nose Bandits. Said song is an up-tempo version of "Pathetic House" from Undertale with an added backbeat and siren noises.
  • The dress on the mannequin being sold by one of the Addisons in Cyber City is the same dress Mettaton wore during his princess acting sequence in Undertale.
  • Asking Spamton about the Knight has him say "TOO MANY EXCESS VACATION DAYS?? TAKE A GODDAMN VACATION STRAIGHT TO HELL" referencing Burgerpants' quote from Undertale's Genocide Route: "I can't go to hell. I'm all out of vacation days."
  • When going through the Weird Route, the room where Sweet Cap'n Cakes would be to meet Kris and Noelle is empty, with only their boxes remaining. Interacting with one of the boxes lets you take CD Bagels for free from it, just like how Undertale's Genocide Route let the player rob stores.
  • Towards the end of the game, when Toriel and Susie are waiting for Kris to finish in the bathroom, Toriel eventually loses patience and asks "where the HELL" Kris is. Susie's amusedly bewildered response of "TORIEL???" mirrors that of Alphys in Undertale's Playable Epilogue when Toriel swears in much the same way.
• No Fair Cheating: A glitch was discovered in the initial release that allows the player to spam big shots in the fight against Spamton NEO. Instead of being patched out, the 1.06 update made it so Spamton will notice the player using the exploit and get very angry, causing his attacks to increase in strength.
• Non-Standard Game Over: Losing to Giga Queen gives you a screen of the Thrash mech sitting defeated at a bench with the words "Don't give up...!" above it and the options to fight again and retire, referencing the game over screen of Super Punch-Out!!.
• Noodle Incident: Another clue into Toriel and Asgore's falling-out is shown in the epilogue via a newspaper clipping in the police station, revealing that Asgore was a respected police officer who was asked to step down.
• Not Completely Useless: A few seemingly useless items in the chapter find surprising usage during Spamton NEO's fight.
  • The mannequin is an armor sold in Cyber City for $300. Every character other than Kris will refuse to wear it, and wearing gives no benefits… except that it reduces damage taken from Spamton NEO by 35%.
  • The Frayed Bowtie is initially said to give 50 defense by Spamton, before it's revealed that it gives 1 defense, 1 attack, and 1 magic in a part of the game where armors that add 3 defense are available. However, against Spamton NEO, it reduces damage by 15%.
• Nothing Is Scarier:
  • An optional sidequest involves Kris exploring the basement of Queen's mansion on their own in search of an Empty Disk. After walking down a derelict railway, you'll find it sticking out of a humanoid machine at the end of a tunnel. From there, you're able to retrace your steps and leave with no issues, even though it feels like something is going to ambush you or give chase the whole way back. It's only on your second visit, after putting the disk back where you found it, that you're attacked by the chapter's superboss.
  • The chests inside the mansion basement are completely empty, save for a few white particles that come out of them. When combined with the freaky atmosphere of the area, one can only imagine why the chests are like that.
  • Everyman appears twice during the chapter as part of Poppup's and Queen's attack patterns, first as a picture on a popup and then as a member of a chatroom. He's rather ominous and still has no context to his presence but unlike in Jevil's fight he won't do anything to harm you this time.
  • The description of the SnowGrave spell plainly and simply reads, "Fatal."
  • In the epilogue, Seam makes a statement that Kris and Susie should hurry home before night falls in Hometown with the wording phrased like something bad might happen if they stay out too late. Given that at least two of the three dark fountains were opened up overnight, it is probably for the better they're somewhere safe while it's dark outside...
• Not So Above It All: The party runs into a puzzle where they need to use a keyboard made of pressure plates to spell out a prompt. Susie immediately tells Kris to spell out a swear with it. After Ralsei notes that this would be impossible with the way the keyboard is laid out, Susie realizes this means that Ralsei (a) knows these swears, and (b) already checked to see if you could swear with it.
• Not the Fall That Kills You…: Berdly manages to safely catch the heroes from a long freefall using flying roller coaster cars.
• No Wrong Answers Except That One: At the end of Spamton's first fight, he offers Kris to partner with him, and says "There are no wrong answers!" while a yes or no prompt appears. Picking no will just have him say "WRONG" and make the player pick again.
• NPC Roadblock:
  • The traffic jam at the beginning conveniently gives you a straight shot to the Librarby and blocks off the rest of the town past it.
  • If you try to go back to the rollercoaster section in Cyber Fields later in the game, a Werewire will be blocking the path, stating that it's under construction, and apparently someone tried to use it anyway.
  • After the final encounter with Queen in the Weird route, Ralsei and Queen block the player from heading back to the rest of the mansion.
• Numerological Motif: The Thorn Ring gradually reduces Noelle's health to 55. What's the significance of this number? When converted into Roman numerals, 55 becomes LV. As in, "LOVE", AKA "Level Of ViolencE".
• Oblivious to Love: Susie almost realizes that Noelle has a crush on her when she sees how nervous she is when approaching them at the closet, but ends up concluding that she knows about their Dark World adventures. She doesn't manage to get any closer than that for the rest of the chapter, despite how awful Noelle is at hiding it.
• Oddly Specific Greeting Card: During the epilogue, Undyne gives Kris a "Get well soon!" card, with "For your bike" written under it, to give to Alphys after her bike crashed. If you check the greeting card section at Sans' store, the only cards available are "Get well soon!" and "I'm glad your bike crashed".
• Old Save Bonus:
  • Talking to Noelle about Susie in Chapter 1's epilogue will lead to Noelle giving Susie a lunchbox of chalk while inviting her and Kris to the library. The chalk becomes a powerful healing item, Light Candy, in the Dark World.
  • If you have encountered the Original        Starwalker in Chapter 1, they'll join as one of your Darkner key items (along with Lancer and Rouxls Kaard).
  • The "Machine to Thrash Your Own Ass" design in Chapter 1 will be used in this chapter's Rouxls Kaard fight and Queen's mech fight.
  • If you have any Chapter 1 saves where you beat Jevil, you can get his Shadow Crystal and the reward in Chapter 2, even if it doesn't continue from the save where Jevil is defeated.
  • If you found the hidden egg room in Chapter 1 with the Man Behind the Tree, you can find another in this chapter ^note  it's the transition of the room where the Annoying Dog runs you over and they'll give you a second egg. This time you can put it into the box of eggs in Sans' shop, to Susie's confusion at your "Reverse shoplifting.".
• Ominous Music Box Tune: When confronting Noelle in the hospital during the epilogue of a Weird Route playthrough, the interaction is underscored by a song referred to in the game's files as "flashback_exerpt.ogg", a minor-key music box arpeggio atop a skeletal version of Noelle's leitmotif and a droning synth string version of "THE HOLY".
• One Bullet at a Time: You can only shoot bullets as the yellow SOUL when there are less than 3 bullets on screen.
• O.O.C. Is Serious Business:
  • Alphys notes that Susie showed up on time for class, which is unusual for her. It's actually because Susie was so excited about what happened in the Dark World that she immediately wanted to go back.
  • When Berdly intends to make a Dark Fountain, Ralsei gets uncharacteristically angry, yelling at Berdly to stop. Ralsei then reveals that too many Dark Fountains would have catastrophic consequences.
  • When talking to Temmie in the post game, she once again drops her typical manner of speaking and asserts seriously that she will go to college.
  • When she first comes face-to-face with Toriel, Susie is petrified and treats her with an almost excessive degree of respect and politeness, and takes a while to relax again.
  • In the Weird Route, Berdly immediately notices something is wrong with Noelle and that Kris is the apparent cause of it. He drops all his grandstanding, arrogance, and wordy speeches to try to kill Kris and get Noelle away from them. This is even reflected in the fight where instead of his cocky smirk, he has a serious look in his eyes and aggressive scowl on his face the entire time, and forgoes using his easier-to-dodge attacks in favor of one of his hardest-hitting attacks.
  • As an inverse from Chapter 1, there are three times Susie doesn't show her eyes in her talking portrait. The first time is mostly Played for Laughs when she reacts to the player answering "no" to entering the new Dark World. The second time is the most serious, when Susie injures herself falling off the Trash Zone's trash pile and is unable to hide it behind her usual "badass" persona until Ralsei heals her. The third time is when she scares off Snowdrake and Monster Kid who are making fun of Kris at the bunker.
• Our Titans Are Different: Titans are explained to be gigantic, multi-eyed, world-ending creatures that will form in an event called the Roaring if too many Dark Fountains are created.
• Permanently Missable Content:
  • The Cyber World and its unique items are closed off once the Dark Fountain is sealed, which also locks you out of the superboss fight. Seam comments on you missing a Shadow Crystal if that happens, and the game itself warns you the first time you touch the Castle Town SAVE point.
  • Progressing far enough with Spamton's sidequest will remove him from the shop and render it useless, which he warns you about beforehand. Of course, Spamton is a Snake Oil Salesman and all of his items are junk, so there's no real loss for not buying them.
• Player Nudge:
  • If you speak to Seam after defeating Spamton NEO without a linked Chapter 1 save that has beaten Jevil (either due to linking a save that hasn't beaten him or just not linking any save at all), after taking your Shadow Crystal they'll ask if you're sure you don't remember defeating Jevil, and then say that if you do remember, his Shadow Crystal should turn up nearby. Turning left from the entrance to town will lead to his equippable reward as well as the Shadow Crystal.
  • Key points in the Weird Route are noted with an ominous chime, confirming that you're still advancing the secret story. Conversely, ending the Weird Route early is noted with a relieved-sounding chime, letting players who want to get through it without a guide know that they need to reset and try something else — most of the route's requirements are obvious enough once one hits on the idea of "use Noelle's ice magic to murder as many enemies as possible", but a few points do require a bit more backtracking and thorough searching, and this chime will alert you if you miss them.
• Point of No Return:
  • If you haven't recruited every possible enemy, Trashy will show up at the corridor that leads to the Final Boss to remind you of those you missed, and to recruit them before engaging the Final Boss, since you will otherwise lose your chance.
  • Once you seal the Dark Fountain, you can't go back to the Cyber World. Unlike in Chapter 1 where there were no SAVE points to avoid locking yourself out after this, Chapter 2 has a SAVE point in New Castle Town where you are encouraged to SAVE, and thus potentially locking you out of finishing up side content such as the superboss. The game does, however, remind you that you can't return to the Cyber World when you use the SAVE point.
    (You thought about how you can't go back to the Cyber World anymore. You considered this carefully!)
  • If you choose to take the Weird Route, you can opt out at any time and revert back to the neutral route up until the second fight with Berdly. Once you have Noelle kill Berdly, it permanently locks you into the route, which means you'll miss out on most of Queen's mansion and her two boss fights, among other story segments. You're normally free to backtrack through the entire chapter, but committing to the Weird Route railroads you into the mansion with no way to return to previous areas.
• Poke the Poodle:
  • After Chapter 1 ended with a very unnerving cliffhanger of Kris ripping their SOUL out, flashing a Slasher Smile at the player, and manifesting a knife threateningly, this chapter opens with Toriel asking "Is that a knife" and screaming in horror... because Kris got into the pie she baked the previous night and left their knife in the tin.
  • If talked to while breaking out of Queen's guest rooms, Lancer will reveal the evil scheme he and Susie are planning to spring on Berdly: When they make their matching track jackets, his one will be the wrong colour.
• Poor Communication Kills: Queen had no idea that creating Dark Fountains endangered the world, and immediately stops her plans the moment she's informed of this. Ralsei knew about the danger all along but never bothered to mention it because he assumed she already knew.
• Power at a Price: On the alternate route, Kris can buy the Thorn Ring, which halves the cost of Noelle's ice spells while dealing her constant damage. Buying and equipping it is required to continue the route, as SnowGrave can't be cast otherwise.
• Pronouncing My Name for You: Rouxls Kaard clarifies that his first name is, in fact, pronounced "Rules". The music that plays during the simultaneous battle and game of "Houses" near the end of the castle is itself called "It's Pronounced "Rules"". Further hinted at when Rouxls becomes a part of the player's inventory at the start of the chapter, becoming a literal "Rules Card".

R-Y

• Rapid-Fire Comedy: The already packed jokes are turned to the maximum here; every single item description, interact-able background element, and NPC encounter has some kind of joke, if not multiple jokes, and there are encounters and interact-ables everywhere. The antagonists are mostly wacky instead of threatening and the tone of the story (if you avoid the Weird Route) is much Lighter and Softer than before. Things will explode at random, Toby Fox's dog avatar interferes with the plot multiple times, and Lancer lives in Kris's pocket for most of the story providing cartoony splat sounds and random comments on the current story, among many other Denser and Wackier/hilariously absurdist moments.
• Reasonable Authority Figure: Ralsei is this as the prince of darkness; he jokingly banishes Susie and Kris from his kingdom until they work on their project. He realized, however, that strange dark energy was coming from the library and decided to come to help them. Due to the direness of the situation, no one questions how Ralsei was able to navigate from the Castle Town in the school to Cyber World in the library. When Berdly suggests opening a Dark Fountain to create their perfect world, Ralsei shouts at him and Noelle to stop. He reveals too many Dark Fountains will cause the apocalypse, aborting that plan. Later, he rescinds Kris and Susie's joke exile so they can see how everyone has settled into the Castle Town, including the Cyber World residents.
• Refusal of the Call: The player can attempt this. When Kris and Susie are visiting the Librabry's computer lab to work on their school project and find a dark fountain instead, they can respond with "We can use the computer at my house". Susie forces them into taking on the fountain anyway.
• Relationship Chart: The personalized tea you can purchase from one of the Addisons in Cyber City functions as a subtle version of this. Each tea varies in taste and health restoration depending on who's drinking it and roughly signifying their relationship to the person the specific tea is personalized around and how they see them.
  • If a character drinks their own tea, they say that it tastes like water and it only heals 10 HP.
  • Kris is healed the most (120 HP) by and seems to like Susie Tea the most (notably, Kris looks at Susie while drinking the Susie Tea), while mostly being indifferent to Ralsei and Noelle Tea (60 HP and 70 HP, respectively). The flavours in all cases are not specified.
  • Susie is healed equally by Noelle, Ralsei, and Kris Tea (120 HP), and enjoys all of them, tasting like eggnog (referencing Noelle's Christmas Motif), marshmallows (perhaps due to Dark Candy tasting like marshmallows, or just because Ralsei is soft and sweet), and apple juice (probably referencing Kris's apple-scented shampoo), respectively. On all of them, Ralsei chides her for drinking too fast.
  • Ralsei is healed equally by Kris and Susie Tea (120 HP) and says it tastes like blueberry and grape juice (referencing their Color Motif in the Dark World), respectively. Noelle Tea heals much less (50 HP) and he only comments it tastes "soft and sweet", presumably because Ralsei doesn't really know or interact with her.
  • Noelle really loves Susie Tea and is healed the most of any tea-character combination by far by it (400 HP), although it's not mentioned what it tastes like, only that she wants a lot more. Kris Tea (70 HP) tastes like cinnamon (she comments in the story that Asriel's jacket smelled like cinnamon, and Toriel bakes a lot of cinnamon-butterscotch pies) with a weird aftertaste (she's been the victim of Kris' prankster habits). Rather… unusually, the Ralsei Tea is invisible to her and only replenishes a mediocre amount of health (50 HP); the implications of this are unclear.^note It's actually impossible in a standard play-through to have her drink Ralsei or Susie Tea because Noelle is not in the party anymore by the time they return; you have to modify the game to see her reactions.
• Renovating the Player Headquarters: Starting in Chapter 2, the player gains the ability to "recruit" all spared foes, building up the population of and unlocking new facilities in the Castle Town in the Dark World. It also gives the player all of Chapter 1's foes regardless of if you spared them, as a starting levy.
• Retcon: The 1.07 patch added a new minor dialogue if the player beat up any enemy in the prior chapter to help explain why the Dark World townspeople don't hold any animosity towards the people who were violently attacking them. Lancer used his powers as the new king to grant the trio amnesty, and all their past transgressions were forgiven.
• Retconning the Wiki: Partway through Cyber Field, the heroes find a copy of Cyberpedia, which Ralsei edits to add in a tutorial about recruiting enemies. Checking the Cyberpedia again after reading the tutorial shows that Susie vandalized it to read "From now on, ralsay drools Susie rules."
• Retraux:
  • A good portion of the Cyber World has a vibe of or references to the late '90s and earliest 2000s, such as Sweet Cap'n Cakes' general aesthetic, the Virovirokun enemy occasionally proclaiming "Happy New Year 1997!" and referencing computer worms from 1999-2000, Spamton's obsession with the year 1997, the Poppup enemy occasionally referencing "OS 2000", and Queen often projecting herself on a screen with a background bearing a striking resemblance to the "Bliss" background for Windows XP. This may derive from the old, disused computers being stored in the Librarby's computer lab.
  • The final battle against GIGA Queen has a background reminiscent of an SNES game utilizing the Super FX chip.
• The Reveal: Chapter 2 clarifies a few things about Chapter 1 and the greater narrative while still leaving much unexplained.
  • The Dark World is a reflection of the Light World, formed from wherever a dark fountain is created. The Card Kingdom was formed from player pieces and decks of cards, and Chapter 2's setting is formed from a library's computer lounge.
  • Darkners generated in one part of the Dark World cannot persist very long in others before turning into statues. Since their worlds are destroyed by sealing off the Dark Fountains, their only safe haven is Ralsei's kingdom, which can safely contain Darkners from any part of the Dark World.
  • The reason the dark fountains are dangerous is because too many fissures will awaken beings called Titans, who will bring about the end of the world in an event known as the Roaring. It will plunge the world into eternal darkness.
  • Kris has the power to create dark fountains. In fact, any human or monster from the Light World is capable of doing so, according to Queen, and Berdly nearly does so before Ralsei talks him out of it.
  • One relegated to extra content: Jevil was secretly holding onto a Shadow Crystal, a mysterious item that seems to be connected to the Dark Fountains and the real-world locations they are based on. Seam is aware of them, knows that there are more out there, and wants Kris to find them and bring them over.
  • One of the most terrifying ones is the revelation of an equivalent Genocide-esque run; remember how Chapter 1 kept emphasizing that your choices didn't matter and everything you did more or less resulted in the same outcome, even if you dealt with enemies violently instead of pacifying them? This is subverted in Chapter 2, where you can get Noelle to level grind and eventually grow strong enough that she goes mad with power, changing the entire last part of the stage. It shows that much like in Undertale, the Soul the player represents is just as capable of malicious cruelty as it was in Undertale; it is not just a benevolent force keeping Kris's real personality in check.
  • Asgore was the former Chief of Police in Hometown. He was removed for an unknown reason, and Undyne replaced him.
  • A figure called The Knight was the one who created the Dark Fountain in the Library. The Queen saw them and was inspired to make more worlds.
• Rocket Punch: GIGA Queen uses these against the Thrash mech after she's seemingly defeated, snapping the latter in half.
• Running Gag:
  • Queen's cages. Or rather, her inaccuracy with them.
  • The Stylistic Suck explosion gag originated in Chapter 1, but it becomes way more common here, especially when it comes to Queen's stuff. Doors in her palace, her car, her "extra dangerous" wine glass…
  • Queen forgetting that Ralsei exists.
  • Kris (plus or minus Susie) eating moss, a one-off gag from Chapter 1, gets referenced no fewer than three times in Chapter 2.
• Schmuck Bait: A subversion. During his battle, Spamton will tell you to press F1 if you need help. Considering he's a huge scam artist who's actively trying to kill you, most players aren't inclined to try; however, if you actually press F1, you'll be healed for 50% HP.
• Screw Destiny: One interpretation of the Weird route, colorfully metaphorized by the abacus in the hospital; normally, the beads are stuck on their racks, following their linear, guided paths with no choice in the matter. In the Weird route, however, the blue bead has been broken off of the abacus, having gained its freedom… but being unambigously worse off, broken and useless (a metaphor that can fit Kris, Noelle, Berdly or any or all of them). This raises an examination into this trope by asking; if you're being linearly guided towards a good ending, is that better or worse than leaving yourself or others broken and potentially leading to a worse outcome in the process of fighting fate to prove you have agency?
• Screw the Rules, I'm Doing What's Right!: During the fight with "Sweet Cap'n Cakes," Kris attempts to ACT in order to get all of the enemies dancing at once, but it's actually impossible to do so because the first dancer you cause to dance will always stop dancing by the time you make the next one dance. Susie then lampshades how they have been relying on Kris to use ACTs. Ralsei insists that it's Kris's "unique talent," only for Susie to teach herself "S-Action," which essentially allows her to ACT without Kris's command. Ralsei protests, but then she forces Ralsei to learn "R-Action," allowing the party to get every single enemy dancing in a single turn. Funny when you remember that it's Susie who enforces this.
• Self-Deprecation: Examining Asriel's computer will have Kris inspect a folder that contains "a poorly-drawn design for a game". The final boss has giant rainbow wings, and the narration comments that the game probably never saw the light of day. Toby Fox's design process involves poorly-drawn sketches, the final boss of his last game has giant rainbow wings, and his games have definitely seen the light of day.
• Self-Fanservice: Parodied in-universe with Berdly, who asks the Sweet Cap'n Cakes to build him a statue of himself as a muscled man (with nipples for some reason) whose left arm is strong enough to hold Queen.
• Ship Tease: Chapter 2 really goes all-out on this front, teasing practically every possible couple.
  • Oodles of it between Susie and Noelle. Noelle has a blatantly obvious crush on Susie, while the latter remains Oblivious to Love but nonetheless has several moments of blushing around the former (such as when Noelle gives her a present), and apparently never bullied her like she did with the other students because she's always remembered and appreciated a time that Noelle was nice to her. To hammer it home, at one point the two are alone together on a Ferris wheel with heart-shaped carriages.
  • Kris and Ralsei continue to get more, with Ralsei being glad for the chance to have some time alone together on Queen's swan-shaped boat (complete with blushing), and is very happy if Kris says they feel the same way. If Kris hugs Ralsei as their pose for the picture, he blushes even more. To top it off, the music for that area is named "Acid Tunnel of Love".
    • Trying to equip the Snow Ring (Noelle's default weapon) on Ralsei will have him ask if you're trying to propose to him.
  • Kris and Noelle get a few good moments once she joins the party. She pours her heart out to them at one point, about the shared past of the two and their friendships and how much it all means to her, at one point even wondering whether there might be something more there... only to dismiss it and shift focus to Susie again. This takes a decidedly darker turn in the alternate route, where Kris/The Player can take the role of an abusive and destructive partner that forces Noelle to do terrible things.
  • Even Susie and Ralsei have a couple small moments. When Susie hurts her leg and Ralsei heals her, it clearly felt much better for her than she'd like to pretend, and she was subsequently very quick to grab him along to hang out with, away from Kris.
  • In general, the player is given a number of dialogue options to essentially tease their own ship. Kris can be made to show appreciation to Noelle, Susie, and Ralsei each at given moments, at one point giving one of them a present — and at the sleepover scene, essentially choose whom they would take out on a date if allowed, though it's worth mentioning that choosing Susie is the only option that Kris doesn't say with confusion, implying that Kris themself wants to go with Susie.
    • Some dialogue seems to imply a preferred relationship between Kris and Susie, independent of the player's choices, including the aforementioned sleepover question. The Susie Tea heals Kris the most out of all the different tea types, and after the battle with Spamton NEO, Ralsei will offer his scarf as a comfort item to Kris, but Kris asks for Susie's jacket instead. If you also hugged Ralsei on the swan ride before the fight, Ralsei will hug Kris, but Kris would rather have Susie hug them, which she angrily denies. At the beginning, when Alphys asks if Kris is losing sleep over being partnered with Susie, choosing "Yes" will have Alphys note how positively stated it was.
• Shoo Out the Clowns: Many humorous characters in Chapter 2 either disappear or get their role diminished during the Weird Route.
  • Lancer, a major source of laughs in Chapter 1, falls fast asleep throughout the entirety of the Weird Route and thus cannot commentate on the current events.
  (Innocent boys are fast asleep.)
  • The Laughably Evil Queen gets replaced by the deranged and sleazy Spamton as the Arc Villain of Chapter 2.
  • Rouxls Kaard completely petrifies by the time the party make it to Queen's mansion, thus removing his lighthearted boss battle and goofy interactions.
  • The very very mindscrewish Room Between Rooms with the man behind the tree who hands you an egg does not appear during the Weird Route.
  • Much like in Undertale's Genocide Route, the Annoying Dog doesn't appear to troll the characters in the Weird Route. Its first appearance is completely skipped and its second appearance in the castle is replaced by a maze of Pipis.
  • Sweet Cap'n Cakes are nowhere to be found after the Weird Route starts, removing any laughs that can be had at their subpar attempts to rebel against Queen.
  • Berdly's smugness and insufferability disappears the moment he figures out what Kris has been doing to Noelle, and he's actually dead serious during the battle with him. He later serves as the route's Sacrificial Lion by dying to Noelle's SnowGrave spell and setting the darker tone for the rest of the route.
• Shows Damage: After damaging Berdly's bumper car enough, smoke will start to come out of it. Berdly notices and tries to cover the fact that it's breaking down by calling it "smart smoke".
• So Long, and Thanks for All the Gear: When Ralsei and Susie rejoin towards the end of Cyber City, Noelle ceases to be a playable party member (even though she sticks around story-wise for a little longer), and any gear equipped to her becomes unavailable. Inversely, it's possible to take Noelle's gear while she's in the party, and she doesn't do anything to take it back when she leaves. In fact, this can lead to an Easter Egg in the Weird Route; if you remove Noelle's watch and put it on Kris before she leaves the party, she'll notice Kris has it in the real world, cluing her in that it wasn't a dream.
• Solo Sequence: After falling into the Trash Zone, Susie and Ralsei split off from Kris, leaving them alone until they meet up with Noelle. Later on, Kris decides to go alone while completing Spamton's quest, up until Spamton NEO attacks Kris and the rest of the party intervenes.
• Some Kind of Force Field: During some story sections, force fields are placed at the exits of the room, to prevent the player from walking out of the encounter. These force fields only become visible when in proximity.
  (It appears to be some kind of forcefield.)
• So Much for Stealth: After Queen captures everyone, and the heroes bust out with Berdly. They discuss how to save Noelle. Berdly says that if Ralsei and the others distract Queen, he can escort Noelle to a safe location and keep her from becoming robotized. Susie decides to go help, and actually manages to get Noelle out of her room using a random Ferris wheel, while they talk in low whispers. Just as they prepare to book it, Berdly appears with a flower and grand romantic music... for Susie. Susie reminds him to stick to the plan, as she jumps down to rejoin Ralsei and Kris. Berdly, however, makes the mistake of confessing to Noelle that he likes Susie and thought that Noelle had a crush on him. Noelle forgets all pretenses of stealth and starts shaking him while screaming. By the time the heroes make it to Queen, they see Berdly assimilated via a plug to the face, and Queen "reassuring" them that Noelle is next.
• Stab the Salad: Toriel screams out a Big "NO!" during the opening when she sees a knife. The way the text is framed, it appears as if Kris is stabbing their mother. However, Kris is in bed the whole time; Toriel screamed because Kris ate all of the pie from the fridge when she told them not to do that.
• Stating the Simple Solution: Kris and Susie have to go to the library to work on their project. They find the library deserted, despite Noelle and Berdly saying they would be there, and a mysterious portal to another world. Susie says that they need to go in to find out what's happening and access the computer lab to do their schoolwork. Kris can mention offhandedly that the Dreemurr household has a computer, and they can use it. Susie vetoes that notion because she's been looking forward to another adventure. It ends up being the right call since it turns out Queen had kidnapped Noelle and Berdly; Susie and Kris team up with Ralsei again to rescue them. Or at the least, beat some sense into Berdly that he was on the wrong side.
• Stealth Pun:
  • Noelle's unused reaction to the Susie Tea, which heals far more than any other tea drunk by anyone else, is to ask herself if they sell it by the gallon. Noelle is literally thirsty for Susie.
  • Lancer is able to free Kris from Queen's personalized room cage by requesting 999 shovels, overloading the system. In other words, he installed literal shovelware.
  • Spamton's Broken Sword is an unusable joke item. In his shop, however, it is shown to have a ridiculously high attack power, which would have made it a invoked"broken weapon".
• Storyboarding the Apocalypse: When Berdly and the others are just about to create another Dark Fountain, Ralsei interrupts and tells them what would happen if too many Dark Fountains are made: the Titans will emerge from the Fountains, and devastate the land. Then, crushed by darkness, the remaining Darkners will turn to stone. Not only does this dissuade the Lightners from creating a Fountain, but it also makes Queen undergo a Heel–Face Turn with the revelation that her goal would lead to the apocalypse.
• Story Branch Favoritism: Played with. While the player has the ultimate say in what Kris says and does when inside of them, Kris's true desires are able to leak out and affect how the actions are performed.
  • When talking to Alphys, saying that your sleep quality degraded from being Susie's partner will have her note how Kris said that without any negative intonation.
  • When choosing between Bosom or Perish, saying Perish to Queen has Susie scold Kris for saying that so enthusiastically.
  • When telling Ralsei that gaming is your life, Susie brings up that Kris sounded monotone while answering.
  • After fighting Spamton NEO and walking out of the basement, Susie notices that Kris is covered in goosebumps. Saying that there's nothing wrong to Ralsei will have Susie comment on how strained Kris sounded, while saying that you're not OK has Kris burst into yelling.
  • During the end of the chapter, Susie asks Kris whether they would take Noelle or Ralsei to the festival. Saying either of those names will have Susie comment on how confused Kris sounds. Saying Susie has her complain that Kris dodged the question, before clarifying that she would obviously be with Kris at the festival, and saying nothing has Susie note that Kris is looking at her "like a weirdo".
• Story Branching: You can go about the story normally or get Noelle to freeze everyone to death until she grows cold-blooded and learns an insta-killing spell named SnowGrave she ends up using on Berdly, which leaves him dead even in the Light World. As a result of her actions, Spamton NEO takes over Queen's castle and is faced as the final boss instead of a hidden one.
• Students Playing Matchmaker: An optional example. Alphys can be found hanging out by the police station, with her bike destroyed, apparently by mistake by Undyne (perhaps she followed through on that "joke" about tackling Alphys if you brought her up in the past chapter). Undyne feels bad about this and has bought a box of heart-shaped chocolates saying "Get Well Soon"— and then hastily added "to your bike", defensively noting that this was all the store had. She asks you to give it to Alphys for her, and if you do, after initially thinking you're trying to hit on her, Alphys is flattered and seems interested in Undyne. This might or might not be an intentional move on the part of the SOUL to line things up with how they ended in Undertale.
• Stuff Blowing Up: A lot of things explode when Queen is nearby. When the heroes beat Queen in an arcade game, the cabinet blows up. Queen throws a glass, which causes an explosion. Finally, Queen tells Kris and Noelle to get out of her car right before it explodes. There's no explanation for why all these things explode, but it's funnier that way.
• Surprisingly Creepy Moment: If played on a normal route, this chapter is significantly lighter than Undertale or Chapter 1, being almost completely devoted to humor and charming character interactions. Choose to go down the superboss route, and the game quickly takes a turn for the unsettling as the player battles Spamton NEO, who has a creepy design, some very disturbing flavor text and lore, and ends up dying no matter what the player character does. Choose to go down the Weird Route, and your cute monster game turns into a game about mentally abusing, manipulating, and gaslighting an innocent girl into becoming a mass murderer.
• Surreal Humor: The non-SnowGrave routes of Chapter 2 get a lot of their humor from just how bizarre things are in the Cyber World. There's floating ads everywhere. Cars can suddenly sprout legs and walk. Things randomly explode for no reason. There're entire mazes made of blocks of cheese. Berdly makes a giant gold statue of himself with muscles, nipples, and croc sandals. And the final fight is a boxing match between two giant robots. Why? Because it's funny.
• Suspicious Videogame Generosity: On the Weird Route, a SAVE point and a vending machine are added right before the Dark Fountain and the boss battle with Spamton NEO.
• Swan Boats: Kris and Ralsei ride through Queen's acid pool in a swan-shaped boat.
• Taken for Granite: Lancer and Rouxls Kaard turn into statues due to being separated from their own Dark World for too long. Rouxls' head doesn't seem to get petrified, at least not on a normal route; he does become fully petrified on the Weird Route.
• Take That!: When you return to the Library after clearing Cyber World, checking the "TEENZ-OWN" will lead to you checking out the weekly cartoon review, to which the narration says "Just looking at cartoon criticism is sapping your energy rapidly.".
• Tempting Fate:
  • One of the Cyber World citizens, wearing a bowler hat, claims that, because they support Queen, they would never be hooked up to a plug. When you reach the end of the room you're in, you meet a Werewire with a bowler hat, and the original citizen is missing.
  • After touching a piece of cheese sets off the first Maus encounter, Noelle declares that she never wants to see cheese again. In the very next room, there's a whole maze of cheese blocks.
    Noelle: KRIS!!!!!!!!!!!!!!!!!!
• Terms of Endangerment: Used by both Queen and Berdly while after Noelle; Queen uses affectionate terms while trying to convince Noelle to become her peon, while Berdly refers to her as "my dearest Noelle".
  Queen: Noelle Darling Honey Sweetie Gravy
• That Russian Squat Dance: Kris does this during the fight with Sweet Cap'n Cakes.
• That Was Not a Dream:
  • A positive example: when Susie and Kris talk about the Dark World, Susie expresses worry that their adventure the previous day may not have really happened. If it didn't happen, then did that mean they didn't become friends? And if that is the case, can she and Kris still be friends in the real world? After Noelle leaves, the closet turns into the Entrance to the Dark World, and the duo happily jumps in to continue their adventures with Ralsei.
  • A more negative example happens if you have Noelle kill Berdly, while taking her watch in the Dark World and equipping it on Kris. She convinces herself everything was just a dream; but when you meet her in the hospital in the real world, she realizes with horror that it wasn't after seeing her watch still on Kris's arm.
• Thememobile:
  • When on the roller coaster in Cyber Field, each character has a cart based on them:
    • Kris rides in a cyan cart with their face on the front, and hearts along the side.
    • Susie rides a purple cart with a toothy grin on the front, and flame decals on the side.
    • Ralsei rides a green cart that is stylised like a cartoon goat, with a tail, legs and a happy face.
    • Noelle uses a white sleigh instead of a train car, with there being snowflake patterns on the side and a crown on top.
    • Berdly rides a roller coaster that looks like a blue bird.
    • When fighting Spamton NEO, the gang rides in rusted carts with Spamton's face on the front.
  • The Thrash Machine mech at the end of the chapter has Susie-themed arms, a Kris-themed torso, and Ralsei-themed legs. The head is based on the Thrash Machine you created in Chapter 1 (or random if you didn't import a Chapter 1 save file).
• Theme Song Reveal: Most of the acid lake scene has "Acid Tunnel of Love" playing as background music. The theme is a rearrangement of "Thrash Machine" from Chapter 1, which plays when you create a machine to thrash your own ass. Rouxls Kaard shows up with the Thrash Machine in tow near the end of the lake and uses it to fight you.
• Thought They Knew Already:
  • Queen tells the Three Heroes that she plans to have Noelle Reforged into a Minion via robotization. Shortly after, they confront Queen after she's captured Noelle, and Susie proclaims that she won't let Queen turn Noelle into a robot. Noelle is horrified that's what Queen plans to do with her and Susie sheepishly says she thought Noelle already knew (Queen didn't tell Noelle because she wanted it to be a surprise).
  • The entire conflict could have been avoided if Ralsei had told Queen what would happen if she created more Neo Dark Fountains. Queen was under the impression it would actually make a better world for the Lightners and had no clue it would actually bring about The End of the World as We Know It. Ralsei was under the impression Queen was an Omnicidal Maniac who wanted that and was actually surprised that she didn't know and doesn't want that at all.
• Through His Stomach: Should you tell Noelle that Susie eats chalk in the previous chapter, she briefly considers preparing a lunchbox full of chalk for her, only to dismiss the idea... until the very next day, where she shows up with precisely that.
• Too Awesome to Use: Noelle and Rudy mention this trope In-Universe while they play a video game together. Noelle is hesitant to use one of her potions since she wants to save them, while Rudy points out that she currently has 99 of them.
• Track Trouble: The roller coaster the gang ride on while fighting Berdly is unfinished, dumping them into the trash zone.
• Transformation at the Speed of Plot: Due to being in the wrong Dark World, Lancer gradually develops an Incurable Cough of Death and then turns into a statue. Rouxls Kaard, despite leaving his card form much earlier, remains perfectly healthy until after his boss fight, where he suddenly and unexpectedly turns to stone. Weirdly, unlike Lancer, his head remains un-petrified (although in the darker alternate route, he is petrified completely, offscreen).
• Transformation Sequence:
  • Whenever Kris and Susie enter a Dark World now, a cutscene plays showing their Light World clothes being replaced by their Dark World gear as they fall.
  • Parodied with "Power Beast Forme S", a "transformation" used by Kris and Susie which receives an elaborate animated background with lights, sparkles, and magical energy for what is literally just Susie holding Kris's arms and moving them around to help them use the controls on an oversized arcade cabinet.
• Trash Landing: After the boss fight with Berdly on the rollercoaster, the trio are launched off the unfinished track, but escape more or less unharmed by landing in a garbage pile at the Cyber World trash dump.
• Unexpected Gameplay Change:
  • The yellow-heart combat mechanic from Undertale makes a return in the fight against Spamton NEO, with a similar tutorial to demonstrate how you'll need to shoot bullets instead of dodging them. Susie and Ralsei each gain a new ability just for the fight to augment the mechanic.
  • The arcade machine and the final boss fight on the normal route against Giga Queen both play like Punch-Out!!, with the latter integrating some of Deltarune's mechanics into the fight.
• Unintentionally Unwinnable: An edge case can cause the game to lock you out of the Weird Route/worst ending without informing you. If you go out of your way to grind for a ton of money and then waste it all on dozens of duplicate copies of Weapons, you can fill up your whole inventory before trying to obtain the Freeze Ring. The entire cutscene plays out as normal...and then the ring you're supposed to obtain just vanishes because it can't fit in your inventory space. (Weapons have their own inventory slots and do not go into Storage.) Afterward, Spamton does have special dialogue if you don't have enough space to obtain his Thorn Ring...but the game has no option to throw away Weapons and the Cyber City has no shop to sell them to (on any route). You are forced to cancel the Weird Route the same way as a player would if they forgot to pick up the Thorn Ring (Snowgrave costs 200% TP and can't be cast). However, the route was actually screwed all the way back when the player obtained (at least) 47 Weapons and entered the roller coaster building to leave Cyber Field, without informing the player. Funnily enough, this means that you can lock yourself out of the worst ending before it even begins (the first intended decision point is Noelle's first battle). Furthermore, there are three other edge cases in the game where it does properly account for an inventory that's jammed full—in fact, one of these cases can only happen if the player obtains 46 Weapons before starting the Weird Route (rather than 47 or 48).
• Unique Enemy: The Werewerewire, which only appears once outside Noelle's room, or in the projector room if you are on the Weird Route, and is fought by running into it like every regular enemy. Two more also show up as part of one of the challenges in the Party Dojo.
• The Unreveal:
  • Queen's Guest Hall has a room dedicated to Asriel. When you try to enter it, Kris closes their eyes when they open the door, and sees nothing as a result. Returning with Susie in the party gives a little more context; she bursts into laughter at whatever's inside, then when Kris tells her the room belongs to their brother, adds that they'd better hope she doesn't meet him, but she never says what she actually saw.^note Given that several clues around Kris's house indicate that Asriel has some kind of fetish for dragons, and Susie herself is a dragon, this is likely what she's referring to.
    • There's also a room for Berdly, but when you look inside, all that it says is that the contents were surprising without specifying, and a room for Jockington, which only states that the contents are "beautiful".
  • Talking to Spamton in his shop gives an option for learning about the Knight, the mysterious figure mentioned in Chapter 1 to be operating behind the scenes (and if this sidequest is done before battling Queen, this will probably be the first mention of them the player gets in Chapter 2). Asking Spamton about them will have him happily oblige, but then he gets cold feet, profusely apologizes to someone, and then he screams at the player before going back to normal, all without giving any new info.
  • Going to the mysterious bunker during the epilogue shows Snowy attempting to convince a nervous Monster Kid to go inside while discussing what might be inside. Susie scares them off before it can be revealed what it is. Kris apparently knows what's inside, and their expression (per Susie's response) says whatever's in there is bad news.
• Unsafe Haven: A lengthy sequence has the party rescue Noelle so Berdly can take her into hiding. Once the party confront Queen, they discover she had already "intercepted" Noelle and continued her plans unabated. Possibly they were delayed by Noelle shaking Berdly for saying he had a crush on Susie.
• Unspoken Plan Guarantee: After Berdly has his final Heel–Face Turn, he creates a plan on screen to save Noelle, involving Susie sneaking up and breaking her out, followed by Berdly taking Noelle into a safe zone. When the plan is carried out, Queen manages to foil the last step of it.
• Unwilling Roboticisation: At the beginning of the chapter, Queen tells Susie that she plans to roboticize Noelle. When Susie reveals this to Noelle, Queen complains that it was supposed to be a surprise. Later on, Queen directly threatens to turn Noelle into a robot if she doesn't open a Dark Fountain for her.
• Video Game Caring Potential: 
  • When hanging out with Noelle in the Cyber World, you can reassure a shopkeeper that they are just friends rather than pressure her about being "something". She's very relieved by this as the shopkeeper tries to sell you "divorce shoes".
  • You can compliment Ralsei during the Swan Boat Ride Down an Acid River and even take a photo with him. Ralsei is very flattered if you say that "Ralsei is Ralsei" after he talks about how Susie is amazing because she is Susie: bold, brave, a little rude, and honest.
• Video Game Cruelty Potential:
  • There's a hidden Weird Route you can undertake that changes some of the later story and dialogue. Compared to Undertale's No Mercy Route, the Weird Route is far more involved: not only are the requirements much more specific (requiring the player to backtrack through sections, pick certain dialogue options, use one particular attack in battles, and purchase and equip a specific item), you're effectively manipulating the Nice Girl Noelle into doing the No Mercy run for you. Also, No Body Left Behind is averted; the environments will be littered with the frozen corpses of defeated enemies and Berdly's body will be present in the library when everyone returns.
    • You can also unequip Noelle's watch and make Kris wear it in the Dark World. After returning into the Light World, if you meet up with her in the epilogue after doing the Weird Route, she'll Freak Out.
      Noelle: (quivering) Why are you wearing... my watch? Wh... when did you...
  • Played for Laughs during the driving segment with Queen; you're supposed to avoid the cars on the road, but hitting them will actually amuse her instead. Unlike the aforementioned No Mercy route, this doesn't change anything significant in the story, only causing a single inconsequential NPC to not appear in Castle Town in the post-game.
  • Another harmless example: You can have the mice run into Noelle in the annoying mouse rooms in a normal/pacifist route playthrough to frighten her, with, again, no major consequences. In fact, you need to do this in the later rooms in order to progress.
  • Even on a non-Weird route, during the first annoying mouse puzzle, if you try to leave Noelle behind repeatedly, you can tell her to proceed multiple times. She'll eventually blindly run past the switch and leave the mouses to run around behind her.
  • After successfully recruiting all of the Chapter 2 enemies and sealing the fountain, you can violently defeat the enemies in the "Chapter 2 All Stars" battle without losing them.
• Video Game Cruelty Punishment:
  • Unlike in Chapter 1, but much like in Undertale, killing everyone radically changes the story. Where Deltarune differs from its predecessor however is that there's no reward or extra content, and in fact you lose content from going on the Weird route. A good chunk of the story is skipped, and the chapter ends with a now-mandatory Spamton NEO fight with only Kris (who gets an Attack buff to compensate, but no health buff). The enemies you encounter in Queen's mansion are also tougher and fight more aggressively than in the normal route, and, since you killed most of the NPCs, you can't unlock the Chapter 2 All-Stars fights in the Castle Town dojo in the epilogue. There is no reason to go No Mercy other than just because you can.
  • To a far less extreme extent, using violence (attacking normally) will lock you out of certain content. Beating up Spamton in his mandatory boss fight will lock you out of his sidequest and reward as a superboss and defeating enemies with violence means that they don't show up as recruits in the Castle Town.
  • On an incredibly minor note, if you choose to have Kris eat the box of chocolate Undyne tells you to give Alphys, it will say "your guts are being destroyed" and take away one health point. This is the only way to take damage in the Light World, so far.
  • The total health of the Thrash Machine in the chapter's final battle is determined by how many enemies have been recruited, as it's boosted by The Power of Friendship. Choose to break all the bonds by beating everyone up in exchange for stat boosts, and the machine will cap at 200 HP instead of the maximum of 250, making the Giga Queen fight more dicey.
  • If you didn't treat Berdly nicely in both of his solo fights by sparing or pacifying him, you can't save him from burning his arm later on whether you've depleted Queen's HP or you loosened Berdly's wire.
• Violation of Common Sense: If you want to recruit the Swatchlings, you have to deliberately break vases to goad them to fight. This is while you encounter a whole maze of vases and can navigate past them easily. What's worse is if you decide to backtrack and try to find two or three more to save. 
• Violence is the Only Option: The final boss fight gives you an upgraded version of the Thrash Machine and pits you against Giga Queen, who can only be defeated by FIGHTing, with the "Mercy" gauge crossed out to make it clear that it can't be spared. Fortunately, this doesn't do any real harm to Queen herself aside from draining her batteries which she recharges quickly.
• Visual Pun: At one point, you have to solve a puzzle involving filling a box completely using the shapes provided, but they don't line up perfectly. It's Susie who comes up with the unconventional solution of just overlapping them... thereby thinking outside the box.
• Weird Moon: As seen from Noelle's room, the moon in Cyber World is a baseball.
• Wham Episode: The SnowGrave route's battle against Berdly with Kris and Noelle is where the story becomes significantly darker if you choose to go through with it. Noelle kills Berdly with SnowGrave by freezing him solid in ice, which is the culmination of the player corrupting Noelle's mind, making her dependent on them, and generally being abusive to her.
• Wham Line:
  • An extra room in Queen's castle reveals that she didn't create this world: the Knight mentioned in chapter one did. The Swatchlings are watching video footage of the Knight creating the Dark Fountain. Queen is seeking an opportunity to expand her world and make it better, not cause the apocalypse.
  • "Determination." Queen brings it up as the source of the Knight's power, and her dialogue implies that not just humans can use it, but all Lightners. Not only is this the first time this power has been referenced in Deltarune, but it also establishes a key difference between it and Undertale, in which the only monsters explicitly confirmed to possess Determination without disintegrating were Undyne and Flowey.
    Queen: [The Knight] Coursed Its Will Into Its Blade... And Made... Thrusting The Fountain From The Earth [...] This Power... This Power Of The Will... This Power Of Determination... Is This Not Something That All Lightners Possess...?
  • "You'll bring the Roaring." When Berdly and Noelle want to create their own Dark Fountain, Ralsei uncharacteristically snaps at them. Turns out, too many Dark Fountains will summon giant monsters called the Titans, which will cause The End of the World as We Know It.
  • "I can become... stronger?" From Noelle if you defeat a certain number of enemies with her ice spell in the city — the first hint of the game's significantly more hidden No Mercy route.
    • "[X] left" The line that confirms for sure that you have once again started a killing spree.
• Wham Shot:
  • On the normal route, Berdly has promised that he would get Noelle to a safe place while the others distract Queen. As the heroes make it to Queen to take her down, she reveals an assimilated Berdly as her latest Mook. The Lightners and Ralsei go Mass "Oh, Crap!" on realizing that Queen successfully recaptured Noelle, and you have to figure out how to save Berdly while fighting him.
  • The ending of Chapter 2 sees Kris rip out their SOUL again, climb out the window, slash the tires of Toriel's car, then climb back in the window and put their SOUL back in. And when Susie and Toriel are both asleep, Kris opens the front door of the house, and then stabs the ground, apparently summoning a Dark Fountain, with a massive black column that fills the screen. The final shot is of a grinning face on a static-laden TV screen.
  • Noelle successfully casts SnowGrave in the alternate route, which has a unique full-screen animation and very clearly shows the killing of Berdly.
• What Happened to the Mouse?: Early in the chapter, Queen mentions a desire to turn Noelle's face into a robot one. This is later referenced by Noelle's robot disguise, before being brought back when Queen captures everyone. After this, however, the plot point promptly disappears from the story, with Queen instead coercing Noelle to create a Dark Fountain by threatening Susie.
• What Measure Is a Mook?: Downplayed but present in the SnowGrave route: Killing Darkners with Noelle's IceShock ability is not shown in a good light at all, but the game can easily bounce back to the normal route up until Berdly is killed. Berdly's death locks the route onto the darker path and is treated with much more gravitas than any of the Darkners that have been killed before him.
• What the Hell, Player?: If you, for some reason, fail to punch back GIGA Queen's (very slow-moving) final attack, Queen says that she's not done and she has more "Extremely Slow Moving Obviously Punchable Giant Baseballs" for you.
• You Have Researched Breathing: Until the fight with Sweet Cap'n Cakes, Kris is the only one able to ACT, meaning the party can only do so with one enemy at a time. Since Sweet Cap'n Cakes can only be defeated by ACTing with all three of them within two turns, there is no way to defeat them until Susie just decides there's no reason for Kris to be the only one who's allowed to ACT and promptly "learns" to use a downgraded version of it herself, and then makes Ralsei learn it as well even though he didn't want to.
• Your Princess Is in Another Castle!: At the end of the day, it seems a happy ending is reached on the Main Route. Noelle is safe, Berdly has gotten an ego check, and Susie is hanging out with Kris while Toriel is home. Susie even tells Kris they could try to bring Ralsei and Lancer to Hometown to see the sights. Then Kris tears out the SOUL, slashes Toriel's tires, and later that night creates a Dark Fountain. One that could potentially cause the apocalypse. Cue the credits.

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