History Main / MentalWorld

* ''Anime/HisCooolSehaGirls'': [[spoiler:The final episode reveals that everything that happened in the series took place in the minds of the creative geniuses at Creator/{{Sega}}, and graduation meant each girl would venture forth into the real world as a [[UsefulNotes/SegaGenesis video]] [[UsefulNotes/SegaSaturn game]] [[UsefulNotes/SegaDreamcast console]].]]

* ''Literature/{{Paprika}}'', based on Yasutaka Tsutsui's 1993 novel of the same name, involves people's Mental Worlds -- or rather, their dream worlds -- leaking out into reality.
* In the memorypunk universe of ''Anime/{{Kaiba}}'' a relatively common device is utilized which allows one to literally step into the mind of another person or simply click through their memories like a slideshow.
* In ''Manga/RozenMaiden'', everyone's dream worlds are connected through the WorldTree. Somewhere inside any given person's dream world is a tree that represents that person's mental and emotional well-being.
* ''Manga/SoulEater'' has several examples.
** When the Weapons are transformed, they seem to exist ([[OutOfClothesExperience naked, usually]]) in a black, infinite empty space, which can sometimes be seen from outside as uncanny reflections on their metallic surfaces. Liz and Patti seem able to actually move around (Patti on one occasion turning up on Liz's “side.”)
** Soul's soul is depicted as a red and black decorated room with a piano in it. This may or may not be down to his having been infected with the black blood (we see it only after the Italy episode, but he has a longer history with the piano and what it seems to represent for him).
** Tsubaki's soul changes between a dark world filled with long, looming shadows and a clear blue sky over water, depending on whether or not her brother is involved and how it's being used.
** Crona's soul is depicted firstly as an empty desert in which Crona is sitting in circle, where their insane/sad side is shown as a shadow. When Maka enters her soul and convinces Crona (both represented as young children) to leave the circle, the desert is replaced by an island with a blue sea surrounding it. The anime later uses this imagery when Crona runs out of Death City into an actual desert and somehow ends up in a big hole.

* At the very end of the series of ''Anime/LupinIIITheItalianAdventure'', Lupin enters the mind of Rebecca to prevent [[spoiler: her mind being assimilated by Leonardo Da Vinci.]] [[spoiler: Da Vinci]] is able to manipulate and distort her mind through his paintings, creating deserts, artic landscapes, floating islands and a creepy castle..thing that holds and absorbs all her memories. What makes it worse is that '''every''' single Italian is trapped alone in a similar dream with [[spoiler: Da Vinci]], and if they don't defeat him in a show of their best ability e.g swordplay, they become assimilated into his subconscious.

* [[MadScientist Dr. Kanzaki]] from ''Manga/BlackCat'' has the tao power of "Warp World", which creates one of these. He has total control over the contents and the senses of the people within.
* ''Manga/YuGiOh'' features this in the Millennium Puzzle, where the mind of Yugi is separated into two worlds. One is like a toyroom, to symbolize Yugi's naivete and innocence, as well as his love for games. The other of which is a mishmash twist of traps, mazes, and planes that defy the laws of physics to symbolize the depths of Atem's soul. To note though, if you fall to one of Atem's traps in the area, even if he did not want to kill you, you can still end up brain dead.
** One issue of the manga also showed Anzu's mental world, which was filled with things that emphasized her dreams of becoming a dancer.
* There are a few of these in ''Manga/ChronoCrusade'', mostly shown when Rosette "dives" [[JourneyToTheCenterOfTheMind into a person's soul]]. Azmaria's world looks like a graveyard in pouring rain (although it's possible this was influenced by the demon possessing her at the time). Chrono's looks like the grave he was sleeping in when Rosette found him. It's also possible that Rosette's is a train, but [[spoiler:given what was happening when we see her there, it's quite likely that was just her world's version of Purgatory.]]

* Similarly to the ''Manga/BlackCat'' example, Road Kamelot in ''Manga/DGrayMan'' can draw people's minds into a world where she has total control. The one time we've seen her use it, she {{Mind Rape}}d [[spoiler:Lavi by confronting him with his BecomingTheMask]].
* ''Anime/CodeGeass'' has the [[spoiler:World Of C, the world that is the link between Human Consciousness (including the memories of the dead) and the waking world]] which has a link to Geass... that no one ever explains, or possibly even knows about.
** Also, there's the White World, a mental world that C.C. and Lelouch appear in once, butt naked, while their minds are linked or something...
** And finally, C.C.'s World of Memories. When [[spoiler:C.C. locks away her own code, she buries herself in a world filled with paintings that represent her memories... with some sort of caretaker C.C. walking around.]] Which, again, never explained, though I suppose the concept is common enough for people to understand.
* ''Anime/HisCooolSehaGirls'': [[spoiler:The final episode reveals that everything that happened in the series took place in the minds of the creative geniuses at Creator/{{Sega}}, and graduation meant each girl would venture forth into the real world as a [[UsefulNotes/SegaGenesis video]] [[UsefulNotes/SegaSaturn game]] [[UsefulNotes/SegaDreamcast console]].]]
* Shinji from ''Anime/NeonGenesisEvangelion'' frequently lapses into a hallucination of himself sitting in a commuter train at sunset. He's usually accompanied by a child version of himself sitting in front of the sun though at later points he sees Rei instead; sometimes he sees both at the same time with Rei standing to his left. The topic of conversation is always piloting. In ''End of Evangelion'', he gets both Rei and Asuka at the same time: Rei sitting in her usual seat and Asuka standing right in front of him, one leg propped up onto his seat.
** While he's swallowed up in his Eva, he gets a radically different and very vivid hallucination implied to have been caused by his mother Yui/Unit-01.
** And of course there is the original depiction of Instrumentality: the subject of the hallucination sitting in a chair, surrounded by various people while they mercilessly dissect his/her personality.
* In the TV series of ''Roleplay/RecordOfLodossWar'', Neese has to fight the spirit of Naneel within her own mind, over control over their shared body.

* ''Manga/DemonSlayerKimetsuNoYaiba'': The sleep demon Enmu's power is to step inside your inner world through dreams. If your spiritual core in the subconscious part of that world is destroyed, it leaves you mentally crippled and a shell of your former self. The mental world is a reflection of your personality (i.e.: Rengoku's is a wide burning plain of tiled stone floors, Inosuke's is a maze of winding underground tunnels...)
* The ID-wells in ''Anime/IDInvaded'' are a rather different take on this, being simulated worlds created from a "snapshot" of a serial killer's murderous intent via MagicalComputer. Protagonists Akihito Narihisago and Koharu Hondomachi have to figure out the internal logic of each ID-well to deduce the killer's identity so that the Wellside agents can prevent that killer's next murder.

* In the ''AudioPlay/BigFinishDoctorWho'' story, "[[Recap/BigFinishDoctorWho063Caerdroia Caerdroia]]", the villain, Kro'ka, uses a MindProbe to enter the the Doctor's mind, hoping to interrogate him. But he quickly finds it so scary and chaotic a place (amongst other things the Doctor's mind contains a croquet course, a waterslide, and some bits of old cheese) with the Doctor acting as a KillerGameMaster that he quickly wants to leave.

** We're also shown [[AloofBigBrother Darkdevil's]] mind during an attempted exorcism and the DreamLand mindscapes of Normie Osborn and the Kingpin.
* The 1990s ''Franchise/MarvelUniverse'' character ComicBook/{{Sleepwalker}} became banished from the [[DreamLand Mindscape]] and trapped in the mind of human college student Rick Sheridan, and could emerge into the human world whenever Rick slept. When Rick was awake, Sleepwalker was forced to stay in Rick's mind and often interacted with different parts of Rick's personality and memories.
* Elsewhere in Carla Speed [=McNeil's=] ''ComicBook/{{Finder}}'' is one of these, though outsiders can visit Magri's brain via technological means.
* ComicBook/{{X 23}}'s inner world (as we see in her eponymous series) is barren and hellish, filled with the skeletons of everyone she knows and populated by only ravens and white wolves. (And Satan, but it's unclear whether that being was really demonic or just a manifestation of her self-hatred.) Given that she's a [[DeathSeeker suicidal]], badly traumatized {{Tykebomb}}, this is very fitting.
* Creator/AlanMoore is really into the concept of a "London of the mind" made out of the shared history, memory and thoughts of its residents. He explores the concept in ''ComicBook/FromHell'', where Jack the Ripper's goals have their roots in this concept. He also explores them more specifically in his spoken-word album ''The Moon and Serpent Grand Egyptian Theatre of Marvels''.
* In ''ComicBook/PoetAndersonTheDreamWalker'', Jonas assumes this of Genesis when he first sets foot in the Dream World, but Alan explains it's actually created by the subconscious dreams of humanity.
* ''ComicBook/LesCompagnonsDuCrepuscule'': The knight has recurring dreams in which both Mariotte and Anicet are sucked into.
* The Innerverse from ''ComicBook/DemonSpawn'' is a world which exists inside ComicBook/{{Supergirl}}'s mind, created by her repressed inner darkness and populated by weird demons and misshapen goblins. Because her lighter side is growing stronger, though, the Innerverse is decaying and dying.
* ''ComicBook/TheTransformersMarvel'': Used more frequently than you would expect from a series about robots. First used in Resurrection!, although this is influenced by Limbo beings. Next utilised in Salvage, where Megatron engages in (what should have been) his final battle against Straxus.
* The Broken Man from ''ComicBook/AstroCity'' lives in an otherworldly plane of shifting thoughts where he crafts plans against the Oubor. In Astro City proper, he's [[spoiler:a drooling, barely-conscious mute restrained in a straitjacket at a high-security psychiatric hospital]].

** In the sequel, ''Ghosts of the Past'', he, Jean, and [[spoiler: Maddie]] end up in one created by [[spoiler: Laevateinn.]] Since it's influenced by Harry's mind, it resembles the Gryffindor Common Room.

* A recurring subplot in ''Fanfic/QueenOfAllOni'' is the looks inside [[VillainProtagonist Jade's]] mindscape, and the struggle for control of her mind between the [[AnthropomorphicPersonification Aspects]] of her personality, primarily Hero (representing her inherent goodness) and The Queen (Jade's SuperpoweredEvilSide). The mindscape itself is a sea of clouds (literally, they act like water) containing islands whose landscapes are made up of and represent Jade's memories and interpretations of things in her life.
* In ''[[https://www.fanfiction.net/s/10610004/1/The-Mind-of-the-Doctor The Mind of the Doctor]]'', one is briefly created from the Doctor's mind when the War-Feeder and evil side of him try to gain physical form.
* ''Fanfic/AProtectorsPride'' takes the ''Bleach'' concept of manifesting a Zanpakutou a step further: it's theoretically possible to manifest a Shinigami's entire inner world.
* ''Fanfic/{{Intercom}}'': Well, it is based off of ''WesternAnimation/InsideOut''. Only this time, Riley's going to be visiting it! And talking to her emotions!!

* ''Fanfic/BecomingATrueInvader'': During the FinalBattle, [[spoiler:Zim ends up inside his own mind after [[BigBad Minimoose]] takes over his body. This also allows him to enter Minimoose's mind in return, and learn everything about his past.]]
* In ''Fanfic/TowerOfBabel'' the characters undergoing some types of FusionDance can briefly see each other in a MentalWorld that’s either white and endless or based on their memories.
* Like the aforementioned ''Bleach'' example in the anime section, [[Anime/PuellaMagiMadokaMagica magical girls]] in ''Fanfic/{{Moebius}}'' have one, though accessing it is not as easy. The only ones that are seen are those [[spoiler: that are also inhabited by Witches, and come off as ideallic versions of their labyrinths untainted by trauma and pain their original self can access after they are restored to normal.]] When a magical girl becomes a witch, a corrupted version of the mental world becomes their labyrinth.

* ''WesternAnimation/ElephantsDream'' takes place inside a giant machine which, according to WordOfGod, is a representation of an idea that only the main character, Proog, believes in or understands, which is why the deutoragonist, Emo, doesn't seem to notice many of the things going on around him.

-->'''Sunset Shimmer:''' ''[visibly disturbed]'' That... explains so much...\\

** As does ''Film/EternalSunshineOfTheSpotlessMind'', also written by Charlie Kaufman.
* In Jim Henson's ''Film/{{Labyrinth}}'' the eponymous labyrinth seems to be a magical extension of the mind of Jareth the Goblin King, and the crystal balls he uses each contain an illusionary world in which he can appear.

* The 1984 movie ''Film/{{Dreamscape}}'', in which certain people can go into the mindscape of dreamers, only the dreamer may not survive the encounter. Cue Dennis Quaid trying to save people from a psychopath who has learned how to enter dreams and ''then control them''.
* Creator/TerryGilliam's entire catalogue is this trope; he may have finally gotten it out of his system with ''Film/TheImaginariumOfDoctorParnassus'', in which an old man has a magic show in which he transports people into their own minds. Then he and the Devil present them with a choice to pursue beauty/truth/imagination or selfish id-fulfillment.

* In ''Film/SuckerPunch'' the brothel and fantasy worlds take place in Baby Doll's mind.

* Creator/StormConstantine's novel ''Literature/BuryingTheShadow'' involves a realm called the [[DreamLand soulscape]], which connects all people on a subconscious level. An individual's soulscape reflects their mental and spiritual health.
* In ''Literature/{{Kieshara}}'', falcon shapeshifters who surrender to TheCorruption fall into the ''ecl,'' a comatose, depressive state where they are trapped in their own Mental World. It's possible to escape ''ecl,'' but it requires an insane amount of HeroicWillpower and, often, the assistance of a person outside in the real world. But only falcons have the telepathic magic necessary to contact someone in the ''ecl,'' and doing so would risk that they themselves fall into the ''ecl,'' so people hardly ever escape from it. Hai's mental landscape is chaotic, constantly warps the laws of physics and has a lot of snake and falcon imagery, no matter what form it takes. The latter is a hint as to her hybrid parentage. The series' usage of this trope actually has a lot of clinical depression subtext, if you interpret it symbolically. In particular, the dialogue between Nicias and Hai while he is trying to save her from the ''ecl'' is very reminiscent of that between a therapist and his patient.

* In the ''Literature/{{Discworld}}'' books, Samuel Vimes's mindscape is the city of Ankh-Morpork, empty at night, and it is always raining. [[spoiler:The half-demonic entity trying to take him over in ''Thud!'' finds itself completely lost in this dark, unwelcoming city for a while before it's eventually kicked out.]] Remember, Sam Vimes ''loves'' dark and rainy nights.
* 1970s short-lived modern pulp series "Weird Heroes" had Doc Pheonix, a shrink who could enter patient's minds to fix them from the inside. One story had him treating a girl whose mental landscape was a nightmare version of Oz, with a demonic Raggedy Man standing in for her abusive father.

* Creator/MelissaScott's Silence Leigh trilogy (aka ''Roads of Heaven'') has one character doing telepathic therapeutic work inside another's mind.

** Similarly, Hell in ''Literature/TheGreatDivorce'' is a place where the damned can make their thoughts quasi-real. Since they aren't ''actually'' real, their functions are a bit impaired--houses don't keep out the rain, for instance. Really real things are the province of Heaven, and aren't subject to the whims of mere human thoughts.

* In the ''Literature/ThousandSons'' trilogy, Ahriman’s mind contains an elaborate—and literal—memory palace where each of his memories is stored in its own room. He can use his powers to bring other people into this palace for the purpose of showing them his memories.
* In ''Literature/YoungWizards'' book ''A Wizard Alone'', the protagonists enter the mind of an autistic wizard several times.
* In ''Literature/ArtemisFowl The Atlantis Complex'' the reader goes into Artemis's head a couple of times where Artemis is trapped inside his own head. His mind takes the form of his office back in Fowl Manor, though he does acknowledge that none of it real and is simply his mind putting some order to the discord in his brain.

* Happens quite a bit in the ''Series/BattlestarGalactica2003'' finale, as it's shared by several characters. What makes it interesting is that becomes a waking hallucination for everybody involved.

* The series finale of ''Series/StElsewhere'' reveals that the entire show was a product of an autistic child's mind.
* The Attic in ''Series/{{Dollhouse}}'' is revealed to be a long chain of nightmarish Mental World scenarios chained together to be a giant super computer.

** When Captain Picard is almost fatally injured in ''[[Series/StarTrekTheNextGeneration The Next Generation]]'', he meets Q in a featureless white space and is told he is dead. While Q gives him a chance to change his past and prevent his death that way, his body is shown to still be in sickbay, so most of the episode purely takes place in his mind. Q really only wanted him to understand why he is the man he is now. Unless ItWasAllADream.
** The holodeck is variously used to represent the subconscious of Data and the of Enterprise itself. The holodeck allows the crew to see their inner workings through metaphor and symbolism (with Counselor Troi helpfully pointing out their meanings). Justified in that both are essentially computers, so they can be interfaced with the holodeck.
** The Prophets in ''[[Series/StarTrekDeepSpaceNine Deep Space Nine]]'' usually communicate with people within their minds, appearing as people the person knows well in a place familiar to them. (Which also saves a lot of money for special effects.)
** Though it seems to swallow up a persons body, the Nexus in the movie ''Generations'' has all the aspects of a Mental World.

** The Djinn in the series grant wishes by putting people in a mental world that creates what the person thinks would have happened if they got that wish. Since Dean wishes his mother had never been killed, he wakes up in a world where he lives an ordinary life as a mechanic and has a loving girlfriend but is estranged from Sam. [[spoiler: He eventually realizes it's a mental world and kills himself in the dream so he can wake up.]]

** In ''[[Recap/SupernaturalS08E08HunteriHeroici Hunter Heroici]]'', a powerful psychokinetic has retreated into one due to his advancing age, which is causing problems in the real world, but the man is oblivious to Sam's attempts to talk to him. So Castiel ports both Sam and himself directly into the man's mind, which appears as a cartoonscape, then turns to static and technicolor bars once the guy realizes that there are people in his head and starts talking to them.
** Later, Gadreel puts Sam, who he has possessed, into a mental world where he is on a standard hunt, and it is Crowley who must enter it in order to signal he has to fight Gadreel for control. The same thing happens in a later season with Dean when he is possessed by Michael, and Michael puts him in a world where he has retired from hunting and owns a bar.
* In the ''Series/RedDwarf'' episode "[[Recap/RedDwarfSeasonVTerrorform Terrorform]]" the crew encounter a "psi-moon", a physical planet that warps itself into the representation of someone's Mental World. Unfortunately it chooses Rimmer, leading to them being attacked by little black-cloaked figures that represent his self-loathing.
* Used as a premise for ''Into The Universe With Stephen Hawking'', in which all scenes where Benedict Cumberbatch takes over the narration from Hawking are presumed to be thought-experiments playing out within the master physicist's mind.
* Series/KamenRiderWizard. Here they're called the Underworlds, and are the spiritual landscapes of Gates, people with magic potential and where [[MonsterOfTheWeek Phantoms]] are "born". In order to defeat them before they can kill the Gate and wreck havoc in the real world, Wizard has to embark on a JourneyToTheCenterOfTheMind.

[[folder:Music and Music Videos]]

* ''TabletopGame/Warhammer40000'''s Warp is a collective Mental World of the dreams and emotions of every sentient creature in the galaxy. It's also the only afterlife and home to 4 Chaos Gods ([[MyFriendsAndZoidberg plus a few more]]) and an arbitrarily large number of demons. That's mainly because most sentient creatures in the galaxy don't have very much [[ThePowerOfLove love]] or [[ThePowerOfFriendship friendship]]. The Chaos Gods actually represent both positive and negative emotions, just taken to the extreme. Since they gain power from the emotions, they want their followers to feel as strong emotions as possible. So the daemons of the god of love rape you to death. Also home to the Ork gods Gork and Mork, the psychic manifestation of the Ork race. Given that the Orks' vast numbers and simple mentality (endlessly enthusiastic and no real concept of defeat or despair), Gork and Mork appear to be invulnerable and portrayed as simply laughing off any attacks by Chaos gods. Fortunately for everyone else they seem to have no plans other than cheering on the Orks and bashing each other over the head.

* In ''TabletopGame/NewWorldOfDarkness'', both Mages and Changelings can travel into, and [[RealityWarper warp]] both their own dreams and the dreams of others.

* ''VideoGame/AbsentedAgeSquarebound'': Near the end of the final dungeon, [[spoiler:the talking flower reveals that the SunkenCity map that Karen often arrives at is actually her Heart's Core, and her existence will be maintained as long as this place is safe from the Gangers. The flower claims that the image of a sunken city is deeply ingrained into Karen's memory and caused the map to look like this, but how she acquired this memory is unknown.]]
* ''VideoGame/AmericanMcGeesAlice'' has Alice fighting in [[DreamLand Wonderland]] - a world that represents her mind. Given that at the time Alice is in an asylum, Wonderland is virtually a nightmare, twisted by her insanity and depression.
* The entire premise of ''VideoGame/{{Psychonauts}}'' is based around entering the mental worlds of others and fighting their {{Freudian Excuse}}s. Some examples: An army-obsessed drill sergeant wannabe's mind is a RemilitarizedZone obstacle course (Starting, as the page quote alludes, in a recruiting office). A {{Stoic}}'s mind is a perfect, flat cube. A fun-loving lady's mind is a dance club with a perennial party going on. A paranoid schizophrenic's mind is a twisted neighborhood where everyone and everything are disguised agents of a malevolent conspiracy, etc., etc. They put a great deal of thought into each available mind's quirks, to say the least.
* ''VideoGame/EarthBound1994'' has Magicant, Ness's Mental World which he is [[JourneyToTheCenterOfTheMind forced to travel into]] in order to confront his inner demons.
** ''VideoGame/EarthBoundBeginnings'' also has Magicant [[spoiler: except it's Maria's Mental World.]]
* In ''VideoGame/DieReiseInsAll'' the heroes land individual dream worlds, twice, first it's an ideal world, the second time nightmares. [[spoiler: Bot times those worlds are Martian Mind Traps, used to stop them on their way. By the second time the heroes know, that the worlds aren't real, but still have to fight to get out.]]
* The Fade in ''Franchise/DragonAge'', a place of dreams and imagination, where those connected to the Fade go when they sleep.
* ''Franchise/{{Persona}}'':
** Most of ''VideoGame/Persona1'' takes place inside [[spoiler:Maki's]] mental world, which looks very similar to the real world with some key changes that are for either pleasure or symbolism (for example, some teachers act nicer, and some locations have been swapped out due to unpleasant circumstances).
** The dungeons in ''VideoGame/Persona4'' are created from the subconscious of people who are kidnapped and thrown into the TV World. [[spoiler:The ending reveals that the TV World itself is a reflection of humanity's collective unconsciousness.]]
** Similarly, the Palaces in ''VideoGame/Persona5'' are created from the distorted views of the world of the people the Phantom Thieves targets (the {{Jerkass}} gym teacher who abuses his students sees the school as a castle where everyone else is his slave, the art mentor who steals his students' artwork and passes it off as his own sees the shack he keeps his students in as an art museum where the students are nothing more than exhibitions to be shown off, the greedy Mafia boss who blackmails high school students sees Shibuya as a giant bank and everyone is an ATM that he can drain of money, etc.) Like in ''4'', the alternate world the Palaces are located in, the Metaverse, is itself formed by humanity's collective will.
* In ''VideoGame/ShadowHearts1'' and ''[[VideoGame/ShadowHeartsCovenant Covenant]]'', Yuri's Mental World is a ''Graveyard'', which alone says a lot about his mental state. It draws in souls of dead monsters, allowing Yuri to fuse with them into [[HenshinHero superpowered forms]]. In the first game Graveyard in inhabited by Four Masks - weird creatures [[spoiler:that apparently want to devour Yuri's soul, and take Alice's instead, when she comes to bargain]]. In ''Covenant'' it's revealed that [[spoiler:dead ''humans'' can also end up here, which is exactly what happens with Jeanne and Albert Simon]].
* One key aspect of ''Franchise/SilentHill'' is the blurring between the physical world and the Mental World of a powerful psychic. Also many of the monsters that appear in the town take shapes directly related to the personal fears and troubles of the protagonists [[spoiler:and in the case of Maria, can only be explained as creations of the protagonists mind]]. In ''VideoGame/SilentHill4'', the main character is jumping across a number of an undead serial killer's memories.
* With Alma being almost a copy of Alessa of ''Silent Hill'', the last fight in ''[[VideoGame/FirstEncounterAssaultRecon FEAR 2]]'' takes place in a Mental World, which is a bleak and chaotic as one would expect.
* Following in ''Silent Hill'''s footsteps somewhat, ''VideoGame/AlanWake'' has [[spoiler:The Dark Place, a EldritchLocation were [[RewritingReality reality can be rewritten]].]]
* ''VideoGame/YumeNikki'' centers on exploring the vast dream world of Madotsuki, a girl who refuses to leave her bedroom. The locations and creatures within her dream range from bizarre and whimsical to off-putting, [[BodyHorror grotesque]], and [[FreudWasRight sometimes even vaguely sexual]]. The complete lack of [[NoPlotNoProblem story]] or [[SilenceIsGolden dialogue]] only adds to the experience.
* The ''VideoGame/ExaPico'' series:
** The Cosmospheres exist within every Reyvateil's mind, and the hero will do an activity called ''Diving'' inside the Reyvateil's Cosmosphere, which consists of entering these worlds to solve their inner problems and find the feelings they can use to craft more powerful song magic.
** The Cosmospheres are divided into nine levels, with even stronger songs could be crafted by diving further down the level. However, Diving into the deeper levels of the Cosmosphere (from Level 5 and beyond) would unveil the Reyvateil's true selves hidden deep in their subconsciousness. As their desires that are expressed there are unrestrained by morality which they had as their conscious selves, diving into the deeper levels poses a significant risk to the Diver.
** The [[VideoGame/ArTonelicoIIMelodyOfMetafalica second game]] has the Infelsphere, a dream world which can be accessed by using [[TeamPet Soope]] as the pillow where one of the heroines can contact the other [[spoiler:after the latter was absorbed into the faulty continent Gaea during the Phase II]]. It was later revealed that the Infelsphere's main purpose [[spoiler:is to nurture the bonds between the two Maidens in order to be able to successfully sing Metafalica, with the Hymn Crystal for the second part of the Metafalica as the clear reward.]]
** The [[VideoGame/CielNosurge prequel series]] ''[[VideoGame/ArNosurgeOdeToAnUnbornStar Surge Concerto]]'' also features a type of mental world called Genometrics, which exist in every single living being. Unlike the Cosmosphere, the Dive Level is an access delimiter rather than a linear progression stage. Additionally, the heroines can chain their Genometrics as the game progresses, allowing the Diver to access new worlds they can obtain a new song or Genometric Crystals from.
* In ''VideoGame/CityOfVillains'', there are a few missions where a power psychic will send you into his mind so you can defeat his various paranoias and fears.
* [[spoiler:Sirush]]'s sidequest in ''VideoGame/TheReconstruction'' takes place in one... [[MindScrew maybe]]. It could just be an example of bad dreams.

* Implied to be the case in ''VideoGame/TwistedMetal: Black'', given the impossibility of such things as No-Face and Dollface being unable to consume any food in their current states. [[spoiler:Minion's story mode specifically says that it's all taking place inside Needles Kane's head, if you translate his CypherLanguage.]]
* The setting of ''VideoGame/TheCompanyOfMyself'' exists entirely in Jack's mind, representing [[spoiler: his murder of Kathryn]]. The {{Prequel}}, ''Fixation'', zigzags it a bit; sometimes you're in a real world with a few aspects reflecting Kathryn's problems, and sometimes your in a world entirely based on Kathryn's mental state - although other characters seem to be able to interact with it as well. But the lasers don't affect them, because they're Kathryn's problems. And Jack's [[MesACrowd duplication ability]] - which in ''Company of Myself'' was definitely a metaphor for self-reliance - turns out to be something he can actually do.

* In the final dungeon of ''VideoGame/PlanescapeTorment'', the Nameless One is trapped in a mental prison that [[spoiler:causes his previous incarnations to resurface, which have always lingered as fragments in his subconscious. To escape, the Nameless One must negotiate with and absorb these incarnations, becoming stronger in the process. There's even a possibility for the Nameless One to recover his true name.]]
* The 1999 Christian ReligiousEdutainment game ''Saints Of Virtue'' takes place entirely within the mind of a believer, with various sins being represented as physical locations and aggressive masks. Some virtue are also represented as places.

* The adult BaraGenre game ''Strange Flesh'' has you, The Bartender, [[JourneyToTheCenterOfTheMind travel into the mind]] of Joe in order to help him with his repressed issues; Joe's mental landscape has six levels: [[VideoGameTutorial Surface Level]], Office of Repression, Streets of Liberation, Garden of Vice, Den of Lust, and Innermost Desires.

* ''VideoGame/DigimonStoryCyberSleuth'' has the protagonist dive into the mind of [[spoiler:Makoto Yamashina, a lead EDEN developer]] to get vital information by way of connect-jumping into a machine that he's hooked up to. This inside of his mind looks like a series of pathways set against an [[DesignStudentsOrgasm animated background]] of various technical-looking pictures and words. ''[[VideoGame/DigimonStoryCyberSleuthHackersMemory Hacker's Memory]]'' sees [[PlayerCharacter Keisuke]] enter [[spoiler:Erika's memory server]], which contains all of said character's memories. Within, this character's memories are represented as vibrantly-animated drawings.

* In the Franchise/{{Nasuverse}}, this is used as a powerful rare ability called a "Reality Marble", where the user can temporarily overwrite the surrounding reality with a landscape representative of their soul/meaning. The term "Reality Marble" ("Innate Bounded Field" in Japanese) comes from a metaphor. In a bag of a hundred marbles, 99 are black and one is white. "Marble Phantasm" is the ability of spirits or elementals to work with reality such that they will always draw the white one, no matter what; "Reality Marble" is the unnatural ability to turn all the marbles white.
** ''VisualNovel/FateStayNight'' has this as a major plot point, as the only thing that Archer [[spoiler:(and Shirou, by extension)]] truly gained in his lifetime was his Reality Marble: [[FieldOfBlades Unlimited Blade Works]], an endless, barren landscape littered with swords. It's the basis behind all of his techniques - all of the weapons he recreates come from this world of his, which is representative of his lifelong conflict between ideal and reality.

** Other Reality Marbles include [[CleverCrows Gransurg Blackmore's]] Nevermore, [[GhostShip Fina-blood Svelten's]] Parade, [[JackassGenie Zepia Eltnam Oberon's]] Night of the Blood Liar, [[WhenTreesAttack The Forest of Einnashe]], [[EnemyWithout White Len's]] Summer Snow, [[GrandTheftMe Michael Roa Valdamjong's]] Overload, [[NumberOfTheBeast Nrvnqsr Chaos']] Lair of the Beast King, [[UsefulNotes/JoanOfArc Jeanne D'Arc's]] La Pucelle, UsefulNotes/OdaNobunaga's Demon King of the Sixth Heaven, and [[AliceAllusion Nursery Rhyme's]] Nameless Forest. In many of these cases, these people either don't have the skill or simply refuse to utilize their Reality Marbles in the "proper" way, instead calling upon aspects of their inner world to perform more localized feats that only affect themselves (for example, Nrvnqsr keeps his Reality Marble within his body to modify it, Jeanne manifests hers through her sword in the form of a SuicideAttack, and Nobunaga can manifest hers in the form of a FightingSpirit).

[[folder:Web Animation]]
* In ''WebAnimation/RedVsBlue'', [[TheDitz Caboose]] is frequently subjected to mental invasion. During these times, his mind is depicted as a vast expanse of pillars populated by poor caricatures of the people he knows. Killing people inside of there (temporarily) destroys his memories of that person's real-life counterpart.
[[/folder]]

[[folder:Web Comics]]
* Zimmy from ''Webcomic/GunnerkriggCourt'' has a mental world that resembles a very dark version of the city where she grew up, and is inhabited by various... ''things''. For an extra dose of BlessedWithSuck, she has little control of when she enters or leaves, whether or not she pulls other people in with her, and whether or not [[spoiler:those ''things'' hitch a ride back out]].

* ''Webcomic/NinthElsewhere'': Virtually the entire comic takes place in this type of setting, called elsewhere in-universe.
* In ''Webcomic/{{Shifters}}'' Ferrah ends up in her own one of these [[spoiler:while hypnotized or dominated by a vampire's mental power. She also shows up there NakedOnArrival]]
* In ''Webcomic/{{Homestuck}}'', the Dream Bubbles are these maintained by the dead or sleeping individual whose memory it is. They can manipulate it at will, once they become aware that it is a memory. Witches and Sylphs of Space that have reached God Tier can travel to others' dream bubbles at will.
* In ''Webcomic/ThreeJaguars'', since the comic is about [[http://threejaguarscomic.net/?comic=introduction-page-1 three facets of the writer/artist's personality]], and [[http://threejaguarscomic.net/?comic=introduction-page-5 their interactions]] it's all taking place in a mental world.
* In ''Webcomic/AvasDemon'', [[http://www.avasdemon.com/pages.php?page=0250 she gets drawn into one when she makes the pact.]]
* In ''Webcomic/CharbyTheVampirate'' alps can enter them, and Kavonn likes to make his more [[http://www.charbythevampirate.com/comic/780 literal than it needs to be.]]
* In ''Webcomic/HeroOhHero'' [[spoiler: one of protagonists, Noah, discovers]] his power is to enter these. His body disappears when he enters another's mind and reappears next to the host when he leaves. So far we've seen:
** Mind of Detlef the elf -- a memory of the first time he met Empire soldiers, whom he sees as demonic suits of armour speaking gibberish and setting things on fire with their eye-beams. In the real world Detlef tried to kill [[spoiler:Noah]], but younger him in his memories [[BeneathNotice didn't recognize the victim]], saved him from HungryJungle and demonic soldiers and was quite friendly.
** "Home" -- presumably, the magician's own mind, in the form of a subway station.
** Cow's mind -- an infinite flat grassland, where the cow is the only landmark. Exiting it proves tricky. [[spoiler:Noah needed a place the cow didn't know. He had to dig a pit with his bare hands.]]
* Apart from the communal DreamLand, a part of which is the titular ''Webcomic/CityOfSomnus'', {{Dream Walker}}s have their personal dream worlds, where they can rest up and be themselves, or invite friends over if they want to. The personal worlds reflect the dreamers' personalities and tastes.

* ''Webcomic/{{Comedity}}'': Its storyline sometimes shows the various sides of Garth's personality sitting around a conference table discussing what he should do next. It got particularly interesting when Karen fell through a plot hole into this mental world.
* This is where the start of ''Literature/{{Phaeton}}'' series 3 will occur.

** Timmy's imaginary friend Gary gets trapped in his mind when he stops believing in him. Gary seeks revenge for being unjustly imprisoned, and uses the power of Timmy's mind dimension to imprison Timmy in his old nightmares. [[spoiler:Timmy is able to defeat Gary when he realizes that since it is his mind, he can warp reality ''better'' than Gary can, and turns the closet monster he was afraid of when he was 5 into what it really was: a green sweater. He had since learned of ''real'' things to be afraid of, and counters Gary's attacks by conjuring an image of [[BabysitterFromHell Vicky]].]]
** In a previous episode he [[FantasticVoyagePlot travels inside Vicky]] and sees little people in her brain controlling her actions.
* Played with on ''WesternAnimation/SpongeBobSquarePants.'' When Squidward hypnotizes Spongebob to make him a better waiter, we see the inside of his mind looks like a newspaper office. All the employees are mini versions of Spongebob, with a green visored "editor" telling the workers that he "just got an order from the boss." Then this happens:

* On ''WesternAnimation/PepperAnn,'' everyone's mind is full of robots that look and act like them. For example, [[TheSmartGuy Nikky's]] mind is organized like an enormous library card catalog. When Pepper Ann tries to cram for a trivia competition, they all go a little crazy. One gets frozen from all the iced coffee she drinks to stay awake. At the end, one of them finally gets so frustrated that it screams, [[ScrewThisImOuttaHere "That's it, I quit!" ]]
* ''WesternAnimation/AmericanDad'': Roger's mind consists of animals made out of [=TVs=], tall Oreo mountains and [[https://www.youtube.com/watch?v=1Q5XN9jJEck&feature=related Chocodiles that turn into party balloons.]]
* An early episode of ''WesternAnimation/TeenTitans2003'' had Beast Boy and Cyborg fall through a magic mirror of Raven's and wind up in a bizarre otherworldly landscape, which turns out to be Raven's own mind. They encounter spooky hazards and the personifications of Raven's suppressed emotions, including a depiction of her father full of {{foreshadowing}} for later seasons.
* In ''WesternAnimation/DannyPhantom'', Danny can [[spoiler:use his powers [[DreamWalker to enter dreams]]]].
* ''WesternAnimation/TheSimpsons'': Homer's dreamscape includes Moe's Taverns on every street corner, skyscrapers made of Duff cans, bowling pins and food and a Homer-themed rollercoaster.

* ''WesternAnimation/{{Beetlejuice}}'': Lydia enters Beetlejuice's mental world in one episode. It's very wacky!
* ''WesternAnimation/GravityFalls'': In Dreamscaperers, Dipper, Mabel and Soos have to hop inside Stan's own Mental World to stop the dream demon [[DreamWeaver Bill Cipher]] from finding the code of the Mystery Shack's deed.
* ''WesternAnimation/FinalSpace'': In Chapter 8, Team Squad enters the mind of a Titan named Bolo; it's presented as a bizarre, colourful world split into multiple chambers and is inhabited by a sentient, short-tempered blue ball with arms and legs which also serves as the guardian of Bolo's mindscape.

* Lucid Dreaming could be considered a type of mental world in that the dreamer has the power to control everything like a god, without having to abide by any laws of logic because of their level of self awareness, making it less of a DreamLand, and more of a seemingly real (but completely controlled) fantasy.
* Mental landscapes can be deliberately implemented by anyone with the spare time and imagination, from the infamous "Memory Palace" or other buildings full of projects, to a much simpler HappyPlace inside - though a full mental world doesn't tend to be frozen in time like a HappyPlace is.

** May Parker has ventured both into her own mind and that of her [[Franchise/SpiderMan father]]. The first is a typical JourneyToTheCenterOfTheMind, but the latter is much more up-front, as May struggles to free her dad from being mentally enslaved by [[BigBad the Green Goblin]].