History Main / MergedReality

SisterTrope to SetRightWhatOnceWentWrong, which deals with changing events in the past in the hope that things turn out better. See also FusionDance for when two ''characters'' merge together. CrossoverAlternateUniverse occurs when 2 or more works in a {{crossover}} fused into a single verse.

SisterTrope to SetRightWhatOnceWentWrong, which deals with changing events in the past in the hope that things turn out better. See also FusionDance for when two ''characters'' merge together.

* The climaxes of ''ComicBook/CrisisOnInfiniteEarths'', ''ComicBook/ZeroHour'', ''ComicBook/InfiniteCrisis'', ''ComicBook/{{Flashpoint}}''... DC Comics seems to be in a habit of doing this every decade or so.

* In ''WesternAnimation/RickAndMorty'' episode "The Vat of Acid Episode", Morty learns that all his SaveScumming was really just him [[KillAndReplace killing and replacing another Morty from a different dimension]]. In an attempt to fix this, he has Rick merge these timelines into a single reality so that none of the Mortys were killed. Unfortunately for him, doing so causes all the people Morty pissed off in the other realities to want to get revenge on him. Morty is thus forced to follow Rick's fake AcidPool plan, which he saw as a dumb idea, just to get them off his back.

* In ''WesternAnimation/RickAndMorty'' episode "The Vat of Acid Episode", Morty has Rick collapse all of his SaveScumming timelines into a single reality so that none of the Mortys were killed. Unfortunately for him, doing so causes all the people Morty pissed off in the other realities to want to get revenge on him, forcing Morty to follow Rick's fake AcidPool plan just to get them off his back.

* In ''VideoGame/{{MGCM}}'':

* ''VideoGame/TalesOfSymphonia'' ends up with this being the goal of the main characters, although for much of the second half of the game they are under the mistaken impression that they need to do the exact opposite in order to SaveBothWorlds. [[spoiler:It just so happens that the resulting combination ends up being the world map of ''VideoGame/TalesOfPhantasia''.]]

* ''VideoGame/FinalFantasyV'': this is exactly what OmnicidalManiac Exdeath wants to happen and the heroes are trying to ''prevent''. As it turns out, the [[MacGuffin power]] he's after was sealed by splitting the world in two hundreds of years ago, and he can only release it from the Dimensional Rift by reuniting the worlds (which entails the destruction of the [[CosmicKeystone Crystals]], so with or without Exdeath actually claiming his prize and wreaking havoc with it, everybody's pretty much screwed). [[spoiler: Exdeath succeeds in reuniting the worlds, so the heroes settle for protecting the merged world.]]

* In ''[[FanFic/IcedFairysANewWorld A New World]]'', [[TheChessmaster Yukari Yakumo]] successfully achieves [[spoiler:the fusion of the worlds of technology and magic, with the added bonus of giving all youkai independence from human thought.]] She's been [[ThanatosGambit dead]] for three hundred years and was ''still'' able to trick ''everyone'' in both Gensokyo and Luna into executing her plan to the letter.

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[[folder:Webcomics]]

* In ''ComicBook/WorldsCollide'', BigBad Rift decides to try this on a smaller scale, merging Metropolis with Dakota. It ends messily with the merged cities just being devastated (even further in Metropolis' case due to ''ComicBook/TheFallOfMetropolis'' event.)

* The now-defunct [[http://web.archive.org/web/20100519125927/http://members.fortunecity.com/xxycor/omniverse/index.html Omniverse Fan Fic Site]] features the [[Franchise/TheDCU DC]], Franchise/{{Marvel|Universe}}, Creator/{{Image|Comics}} and {{Creator/Wildstorm}} universes merge as one large SharedUniverse, which was the result of the embodiments of each universe[[note]]DC and Marvel's are the Brothers from ''ComicBook/MarvelVersusDC'' named [[NamedByTheAdaptation De'Cee and Mar'Vell]], while Image and [=WildStorm=] are given [[OriginalCharacter female embodiments named Im'Age and Aegis]].[[/note]] having a "cosmic orgy", called the Omniverse. Certain characters (Death, Merlin, Gods of myth, etc.) were [[CompositeCharacter combined with]] [[AlternateSelf their alternate counterparts]], thanks to Access' (now called Existence, the guardian of the Omniverse) power to [[FusionDance fuse people]] with help from the Living Tribunal.

* The now-defunct [[http://web.archive.org/web/20100519125927/http://members.fortunecity.com/xxycor/omniverse/index.html Omniverse Fan Fic Site]] features the [[Franchise/TheDCU DC]], Franchise/{{Marvel|Universe}}, Creator/{{Image|Comics}} and {{Creator/Wildstorm}} universes merge as one reality, due to the embodiments of each universe[[note]]DC and Marvel's are the Brothers from ''ComicBook/MarvelVersusDC'' named [[NamedByTheAdaptation De'Cee and Mar'Vell]], while Image and [=WildStorm=] are given [[OriginalCharacter female embodiments named Im'Age and Aegis]].[[/note]] having a "cosmic orgy", called the [[TheVerse Omniverse]]. The [[AlternateSelf Alternate Selves]] of certain characters (Death, Merlin, Gods of myth, etc.) were [[CompositeCharacter combined into one]], thanks to Access' (now called Existence, the guardian of the Omniverse) power to merge characters from different universes with help from the Living Tribunal.

* A more malicious example nearly happens in the ''Literature/RodAlbrightAlienAdventures''; [[BigBadDuumvirate BKR and Smorkus Flinders]] planned to merge Dimension X with Dimension Q, the dimension Earth is in, thus creating a composite universe where everyone would be subject to Dimension X's Reality Quakes and potentially be driven insane. It's outright stated that BKR is doing so purely ForTheEvulz, despite the fact that he will be affected just like everyone else.

** The end result of the ''ComicBook/SonicTheHedgehogMegaManWorldsCollide'' CrisisCrossover's ending towards Sonic's World in ''ComicBook/ArchieComicsSonicTheHedgehog''. Thanks to Eggman's mucking, Sonic's World is now one part "Mobius Prime" and one part "Mobius Genesis", resulting in a blending of [[VideoGame/SonicTheHedgehog game]] and [[WesternAnimation/SonicTheHedgehogSatAM SatAM]] elements, among other {{cosmic retcon}}s (Eggman's main base being the Metropolis Zone, Knothole being situated in the Wood Zone, Mobotropolis now in Westside Island...).

In stories involving multiple {{alternate universe}}s, [[AlternateTimeline timelines]], or [[AnotherDimension dimensions]], one possible plotline has all of them merge or collapse into a single reality that exhibits (hopefully the best) features of each one. This can be a way to SaveBothWorlds when used for the ending of a work, for if all of these worlds are headed to nothing short of [[TheEndOfTheWorldAsWeKnowIt disaster]], the only choice may be to put them back a different way. This isn't always the reason, though. Sometimes it's the villain, rather than the heroes, trying to pull this off for some sort of personal goal; in this case, it's ''probably'' not an EndingTrope, since the protagonists naturally want to prevent or reverse this. Other times all the danger has already passed and the day has been saved, with the merging of realities serving as a bonus reward to the protagonists who were about to angst that saving the day also meant [[ButNowIMustGo being unable to see their new friends ever again]].

* the final episode of ''WesternAnimation/{{Fangbone}}'', the BigBad Venomous Drool uses a powerful artifact called The World Chain to merge Earth and Skullbania into a single reality so he can cross over without losing his powers.

** Similarly, the combining of the two worlds in the ''Film/SuperMarioBros'' [[TheMovie Movie]] was a plot of the antagonists to rule them both.

* In ''WesternAnimation/StarVsTheForcesOfEvil'', [[spoiler:the dimensions of Mewni, Earth, and possibly others merge after the destruction of all magic in the GrandFinale.]]

** Each of the series' [[AscendToAHigherPlaneOfExistence mortals who have ascended to godhood]], including [[FounderOfTheKingdom Tiber]] [[GodEmperor Septim]] as [[DeityOfHumanOrigin Talos]] (possibly [[MergerOfSouls with others]]) and the [[OurElvesAreBetter Dunmeri]] [[PhysicalGod Tribunal]], have [[MultipleChoicePast highly conflicting origin stories]] with [[MindScrew irreconcilable details]]. One of the most prominent theories to explain this is that one origin story ''was'' true, but upon ascension to godhood, these deities [[CosmicRetcon retroactively changed]] their pasts in a sort of RealityWarping HistoricalHeroUpgrade. Essentially, these beings brought together (at least) two timelines, one where they were formerly mortal, and one where they had ''always been'' gods.

** Omnis accidentally [[InvokedTrope invokes]] this. [[spoiler:Everytime he saw his heroines die, he will create a new reality with wanted possibility, and then merges the old universe with the newly created one. The heroines from old universe, both alive and dead, gets merged with new ones from that new universe, resulting all of them alive. However, this ability has a risk that increases a number of demons, because slain heroines who are corrupted into demons have special conditions that make them unable to be merged with the alternate selves from those newly created universes. Instead, they're replaced by alternate selves from the new universe he created.]] This doubles as RealityMaker and RealityWarper.
** [[spoiler:Kamisaman a.k.a. Isana attempts to [[InvokedTrope invoke]] this after the [[PlayerVersusPlayer Sabbath Arena]] battles are over, as the battles are for heroines' alternate selves and their Executors. The universe-merging system is created in order to [[SaveBothWorlds save some alternate universes]] and removing [[ExpendableAlternateUniverse alternate universes that have unwanted/unpleasant possibilities]] by merging or [[CosmicRetcon rewrite]] all universes, which are involved with Sabbath Battles, with the winner's universe that has the strongest possibility. The only Executor/Tobio who wins the Sabbath Arena battles will be promoted to the next "Kamisaman". Unlike the previous Kamisaman, he will have a special ability to rewrite the rest of the universes' fates so the heroines' alternate selves will have their happy endings.]]

* In ''Film/SuperMarioBros'', the asteroid that apparently killed the dinosaurs actually split our reality into two. King Koopa wants to remerge them because the other universe has a major water shortage and he wants our seas.

* The climaxes of ''ComicBook/CrisisOnInfiniteEarths'', ''ComicBook/ZeroHour'' , ''ComicBook/InfiniteCrisis'', ''ComicBook/{{Flashpoint}}''... DC Comics seems to be in a habit of doing this every decade or so.

** Omnis accidentally [[InvokedTrope invokes]] this. [[spoiler:Everytime he saw his heroines die, he will create a new reality with wanted possibility, and then merges the old universe with the newly created one. The heroines from old universe, both alive and dead, gets merged with new ones from that new universe, resulting all of them alive. However, this ability has a risk that increases a number of demons, because slain heroines who are corrupted into demons have special conditions that make them unable to be merged with the alternate selves from those newly created universes.]] This doubles as RealityMaker and RealityWarper.

* In ''VideoGame/{{MGCM}}'', [[spoiler:Kamisaman attempts to [[InvokedTrope invoke]] this after the [[PlayerVersusPlayer Sabbath Arena]] battles are over, as the battles are for heroines' alternate selves and their Executors. The universe-merging system is created in order to [[SaveBothWorlds save some alternate universes]] and removing [[ExpendableAlternateUniverse alternate universes that have unwanted/unpleasant possibilities]] by merging or [[CosmicRetcon rewrite]] all universes, which are involved with Sabbath Battles, with the winner's universe that has the strongest possibility. The only Executor/Tobio who wins the Sabbath Arena battles will be promoted to the next "Kamisaman". Unlike the previous Kamisaman, he will have a special ability to rewrite the rest of the universes' fates so the heroines' alternate selves will have their happy endings.]]

* In ''VideoGame/{{MGCM}}''. [[spoiler:Kamisaman attempts to [[InvokedTrope invoke]] this after the [[PlayerVersusPlayer Sabbath Arena]] battles are over, as the battles are for heroines' alternate selves and their Executors. The universe-merging system is created in order to [[SaveBothWorlds save some alternate universes]] and removing [[ExpendableAlternateUniverse alternate universes that have unwanted/unpleasant possibilities]] by merging or [[CosmicRetcon rewrite]] all universes ,which are involved with Sabbath Battles, with the winner's universe that has the strongest possibility. The only Executor/Tobio who wins the Sabbath Arena battles will be promoted to the next "Kamisaman". Unlike the previous Kamisaman, he will have a special ability to rewrite the rest of the universes' fates so the heroines' alternate selves will have their happy endings.]]

* In ''VideoGame/{{MGCM}}''. [[spoiler:Kamisaman attempts to [[InvokedTrope invoke]] this after the [[PlayerVersusPlayer Sabbath Arena]] battles are over, as the battles are for heroines' alternate selves and their Executors. The universe-merging system is created in order to [[SaveBothWorlds save some alternate universes]] and removing [[ExpendableAlternateUniverse alternate universes that have unwanted/unpleasant possibilities]] by merging or [[CosmicRetcon rewrite]] all universes with the winner's universe that has the strongest possibility. The only Executor/Tobio who wins the Sabbath Arena battles will be promoted to the next "Kamisaman".]]

* In ''VideoGame/{{MGCM}}''. [[spoiler:Kamisaman attempts to [[InvokedTrope invoke]] this after the [[PlayerVersusPlayer Sabbath Arena]] battles are over, as the battles are for heroines' alternate selves and their Executors. The universe-merging system is created in order to [[SaveBothWorlds save some alternate universes]] and removing [[ExpendableAlternateUniverse alternate universes that have unwanted/unpleasant possibilities]] by merging or [[CosmicRetcon rewrite]] all universes with the winner's universe that has the strongest possibility. The only Executor who wins the Sabbath Arena battles will be promoted to the next Kamisaman.]]

* In ''VideoGame/{{MGCM}}''. [[spoiler:Kamisaman attempts to [[InvokedTrope invoke]] this after the [[PlayerVersusPlayer Sabbath Arena]] battles are over, as the battles are for heroines' alternate selves. The universe-merging system is created in order to [[SaveBothWorlds save some alternate universes]] and removing [[ExpendableAlternateUniverse alternate universes that have unwanted/unpleasant possibilities]] by merging all universes with an universe with the strongest possibility]].