History Main / DoNotSpoilThisEnding

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* ''VideoGame/KingdomOfLoathing'' included an obscure hidden puzzle whose solution included the message "do not spoil this", later revealed to have been an experiment by the game's authors to see how long it would take before the solution was revealed. Unfortunately, a group of people discovered the puzzle and started a collaborative project on the game's official forums to figure it out and share the solution, leading to some uncomfortable silence once they solved it.
** To make things even more amusing, the reward for that hidden puzzle was a special familiar which, to begin with, was ''insanely'' powerful for its type... but would degrade the more people found it, until it was no more potent than any other. It took about a day.
* In ''VideoGame/BillyVsSNAKEMAN'', the penultimate page of [[BonusLevelOfHell The Impossible Mission]] tells players that have gotten that far ''"One last page exists. The game's creator has asked that its contents be kept secret."'' The last page is possibly the most widely viewed part of the game that is not in its [[WikiRule Wiki Guide]].

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* Music/WeirdAlYankovic's song "Nature Trail to Hell," which is basically an ad/trailer for the movie, admonishes "Please don't reveal the secret ending to your friends."

[[folder: Tabletop Games ]]
* ''TabletopGame/{{Paranoia}}'' distinguishes between rules ("don't read this section under penalty of termination, but if you do anyway, then [[NotCheatingUnlessYouGetCaught don't tell anyone]]") and pre-written missions ("[[SincerityMode seriously]], ''don't read this section'', you'll spoil your fun"). Occasionally, the GM is reminded to watch out for this: "the password is 12312312-A, but if a PC just ''knows'' that, then they obviously read the adventure and should be terminated immediately".
* The adventure module ''Die Attentäter'' for the German version of ''TabletopGame/TheDarkEye'' has a surprise twist ending, that at the time of publication asked for secrecy by the players. Even though another adventure, over a decade later, re-uses the secret that [[spoiler: the assumedly male Emperor Hal really was a woman]], you still better watch what you're saying at German RPG cons so as not to upset players.
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* When ''Disney/WreckItRalph'' was still airing in theaters in 2012, the {{Website/Tumblr}} userbase sent a notice around the site telling other users not to spoil the twist that [[spoiler: King Candy was actually Turbo]]. For a couple of weeks this worked- at least until they broke their own promise and started posting TheReveal in its full, spoilery glory.

* ''Franchise/MarvelCinematicUniverse'':
** [[https://i.imgur.com/iRQ5mFy.jpg This Tweet]] from Creator/TheRussoBrothers was a written letter asking fans not to spoil the plot of ''Film/AvengersInfinityWar'', complete with an EngineeredHashtag stating [=#ThanosDemandsYourSilence=].
** Then Creator/RyanReynolds parodied his competition with [[https://twitter.com/VancityReynolds/status/994200379800932358 his own tweet]] asking not to spoil ''Film/Deadpool2''.
--->Only a handful of people know the film's true plot. One of them is not Ryan Reynolds. [...] Cause it'd be super lame to spoil the fact that Deadpool dies in this one. Kidding. Not Kidding. Kidding?
** The Russos [[https://twitter.com/MarkRuffalo/status/1118240387225747458 put out a similar message]] after several minutes of ''Film/AvengersEndgame'' were leaked less than a fortnight before release, reminding the audience that "Thanos still demands your silence." [=#DontSpoilTheEndgame=]

* Those who had seen the movie ''Film/FightClub'', often quoted the in-movie rule "The first rule of Fight Club is ''You do not talk about Fight Club!''" in order to not spoil the Big Reveal.

* The creators of ''VideoGame/FallenLondon'' have asked players to not spoil the hidden Enigma ambition for others. The only help posted on the forums for it is a link to a list of extremely vague clues.
** The final part of the Seeking Mr. Eaten's Name storyline advises players to give only the vaguest hints to others about the ending to preserve its mystery.

** Similarly, Robin is about to ask Rayleigh about the Will of D. and the Void Century, and while he knows all about it, he advices her to find it out for herself, since the Roger Pirates lacked the archaeological background to fully grasp the history. So figuring it out by her own may give her another conclusion than the Roger Pirates got. He still offers her to tell everything if she insists, but Robin decides to take his advice and does not ask further.

** The Russos [[https://twitter.com/MarkRuffalo/status/1118240387225747458 put out a similar message]] after several minutes of ''Film/AvengersEndgame'' were leaked less than a fortnight before release.

** The Russos [[ https://twitter.com/MarkRuffalo/status/1118240387225747458 put out a similar message]] after several minutes of ''Film/AvengersEndgame'' were leaked less than a fortnight before release.

** The Russos put out a similar message after several minutes of ''Film/AvengersEndgame'' were leaked less than a fortnight before release.

** The Russos put out a similar message after several key minutes of ''Film/AvengersEndgame'' were leaked less than a fortnight before release.

* [[https://i.imgur.com/iRQ5mFy.jpg This Tweet]] from Creator/TheRussoBrothers was a written letter asking fans not to spoil the plot of ''Film/AvengersInfinityWar'', complete with an EngineeredHashtag stating [=#ThanosDemandsYourSilence=].

* Justine Larbalestier, in ''Literature/{{Liar}}'', asked readers not to spoil that [[spoiler: Micah is a werewolf.]]

** ''VideoGame/{{Deltarune}}'': The game's website advised people not to talk about it until a day after its initial release on October 31, 2018. Should the player do it anyway by recording the game, they'll get a few {{Jump Scare}}s. After the 24 hours were up, Toby [[https://mobile.twitter.com/tobyfox/status/1057987819765936128 on his twitter]] thanked everyone who didn't spoil the game, and for those who did he says he understands... because he was waiting to talk about it for ''six years''.

** ''VideoGame/{{Deltarune}}'': The game's website advised people not to talk about it until a day after its initial release on October 31, 2018. Should the player do it anyway by recording the game, they'll get a few {{Jump Scare}}s.

--> * FOR PUBLIC SAFETY, YOU ARE ADVISED TO REFRAIN FROM DISCUSSION OF THE PROGRAM FOR 24 HOURS.

* The CreepyPasta ''It Has a Rather Lovely Ending'' is about a cursed video game that compells whoever plays it to reccomend it to everyone they know, with [[TitleDrop the title]] as the only information about it.

** ''Persona 4'' was intended to launch with a friendly version of this message at the start of a playthrough, asking the player not to spoil the identity of the killer. This was removed before the game's release.
** ''Persona 5'' has this as well since some shops in Japan/rest of Asia has broken street dates and has released the games early to its customers. The company is active in looking for anyone posting videos of the game and requesting website hosts to take them down.

* Masahiro Sakurai, director of the ''VideoGame/SuperSmashBros'' series, has stated that the reason the fourth game in the series doesn't have a grand single player campaign like Brawl's Subspace Emissary is because he disapproved of people uploading all of Brawl's cutscenes. He didn't want people who hadn't experienced the game to have the story spoiled on them. In the event that they just inadvertently opened their web browsers, went to Website/YouTube and opened a Let's Play, of course.

* The creator of the adventure game "Diamonds In The Rough" asks the player not to reveal the ending.

* [[https://twitter.com/Russo_Brothers/status/981164646236274688 This Tweet]] from Creator/TheRussoBrothers was a written letter asking fans not to spoil the plot of ''Film/AvengersInfinityWar'', complete with an EngineeredHashtag stating [=#ThanosDemandsYourSilence=].

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* Toby Fox, the creator of ''VideoGame/{{Undertale}}'', asked people to not upload sprite rips since the majority of the character sprites contain details and facial expressions that are spoilers for characters/endings or at least show off a character in a way that would surprise someone that wasn't expecting a character to change in a certain way. Toby seems to be more relaxed in the request after being interviewed by a gaming outlet, saying that he doesn't mind people datamining the game as much as he used to before and the reason he wanted spoilers minimized was to allow people to play the game blind and experience the plot twists on their own.

* Siter Skain, the makers of ''VideoGame/TheTaleOfAlltynex'', have made this request of their fans as well. However, this is extremely frustrating for English-speaking fans of their games, since no translations, official or otherwise, have been made. A couple of bilingual fans have revealed the endings here and there, but good luck hunting those revelations down.

* ''Franchise/OnePiece'' has another InUniverse example. Everybody is searching for the titular [[MacGuffin One Piece]], a great treasure left behind by the Pirate King, Gold Roger, on the last island of the Grand Line, but nobody seems to actually know what it IS. There are many hints that it is far more than just your traditional pile of gold and gems - such as Gold Roger's apparent involvement with the mysteries of the Lost Century. The Straw Hat Crew eventually encounter perhaps the only living person who would actually KNOW, however - Silvers Rayleigh, who was Gold Roger's First Mate. When he offers to share the secret with them, however, Luffy angrily stops him, declaring that knowing it would take all the adventure out of SEEKING the One Piece - in fact, if he found out in such a boring way, he'd immediately quit being a pirate. Clearly, Luffy is big on spoiler-warnings!

* The ''Literature/{{Noob}}'' novels are part of a multimedia franchise in which each media tells the same story in a way that has them each be complementary yet independant. In that mechanic, the novels insert theselves in the TimeSkip between two of the freely available webseries' seasons. A major twist meant to be revealed in Season 5 of the webseries (that was to restart in late March 2013) first happened in the fourth novel (released in October 2012). It was hence forbidden to reaveal anything about the fourth novel on the Internet between the two dates.

* Masahiro Sakurai, director of the ''VideoGame/SuperSmashBros'' series, has stated that the reason the fourth game in the series doesn't have a grand single player campaign like Brawl's Subspace Emissary is because he disapproved of people uploading all of Brawl's cutscenes. He didn't want people who hadn't experienced the game to have the story spoiled on them. In the event that they just inadvertently opened their web browsers, went to YouTube and opened a Let's Play, of course.

* Masahiro Sakurai, director of the VideoGame/SuperSmashBros. series, has stated that the reason the fourth game in the series doesn't have a grand single player campaign like Brawl's Subspace Emissary is because he disapproved of people uploading all of Brawl's cutscenes. He didn't want people who hadn't experienced the game to have the story spoiled on them. In the event that they just inadvertently opened their web browsers, went to YouTube and opened a Let's Play, of course.