History Main / TheMultiverse

* ''[[Fanfic/WednesdayAndTheWeepingAngel Wednesday and the Shifter]]'' has WebOriginal/JennyEverywhere taking Wednesday Addams to other universes where she meets younger and older versions of herself.

* Really, what would The Multiverse be like without WebOriginal/JennyEverywhere? Who, for the uninitiated, exists throughout it and can travel around in it at will.

* ''Fanfic/CrossAngeTheKnightOfHilda'': Upon arriving in the True Earth, Rio is the first to suggest that they're actually in a parallel universe rather than the future, citing the lack of Mana-tech as proof.
** The author also uses it to [[HangingALampshade lampshade]] how the story itself is a non-canon AU:
--> '''Hilda:''' So what you're saying is that because there was a chance you could have taken the wrong road, it automatically creates another universe where you and I never met?
--> '''Rio:''' Exactly. Or maybe in the original universe we never met and this one is the splinter timeline.

* A large number of [[http://members.tripod.com/Dark_Mark/darkmark1.htm Dark Mark]]'s ''[[Franchise/TheDCU DC Universe]]'' fanfics are set in the same Multiverse. ''Fanfic/KaraOfRokyn'' alters the outcome of ''ComicBook/CrisisOnInfiniteEarths'', saving the infinite parallel universes and spawning new parallel dimensions, some of them seen in ''Fanfic/HellsisterTrilogy'' and ''Fanfic/AForceOfFour'', whose heroes every so often interact with each other.
* The premise of ''Fanfic/EggmanGenerations'', with three versions of Eggman gathering a group of their alternates, so that they can come up with a clan to beat Sonic.

{{Dimensional Traveler}}s can move between universes and explore the Multiverse. While it is possible they don't have a choice in their destination, sometimes they do. There are a wide variety of {{Interdimensional Travel Device}}s available but the most common are [[PortalNetwork gateways]] or {{Magic}}.

* Buddhist, Hindu and Jain cosmologies also speak of several realms or lokas. In the case of Buddhism there are six primary realms: human, animal, pretta, hell, deva and asura, each of it also subdivided (for example, there are ten hell sub-realms). Realm might mean both literally a plane of existence or a state of mind. And no, the Nirvana is not included, as it is a status and not a physical place.

This provides all sorts of interesting ideas for things you can do, for good or bad. If it involves trans-universe SexTourism, you have YourUniverseOrMine (or ScrewYourself sometimes). However, beware EvilTwin, and similar beings.

* ''Fanfic/InfinityCrisis''has one as the main setting overall. It starts with Thanos using the Infinity Gauntlet at the end of ''[[Film/AvengersInfinityWar Infinity War]]''. But instead of just affecting the ''[[Franchise/MarvelCinematicUniverse MCU]]'', it affects the entire Multiverse. The original fic features the remaining heroes of the MCU, ''Franchise/{{Arrowverse}}'', and later [[spoiler: the ''[[Franchise/DCExtendedUniverse DCEU]]'' Justice League]] to undo Thanos' actions. [[spoiler: After the Snap is undone, multiversal travel becomes easier and more franchises are introduced in various of sequel and spin-off fics]].

* ''Fanfic/LeagueOfExtraordinaryGentlemenTempestRewrite'': The existence of the world of LXG (and this fic) is explained using the TheWorldAsMyth concept from ''Literature/TheNumberOfTheBeast'', and is also revealed to be a part of the [[Creator/MichaelMoorcock Eternal Champion]] multiverse

* ''WebAnimation/FiveNightsAtFreddysForgottenEvents'': TheStinger in "Kings of the World" [[spoiler:shows the Nightmare animatronics looking in the Fnaf 2 location. Nightmare Freddy and Nightmare Bonnie are talking about one of their drones catching an animatronic and that Nightmare Freddy says that it was impossible for them to catch it. So Nightmare Bonnie says that the multiverse is real, which hints a {{Crossover}} with ''WebAnimation/FiveNightsAtFreddysBertbert'' and ''WebAnimation/FiveNightsAtFreddysTheStories'']].

One could get the impression that the multiverse is a generally accepted scientific theory. In fact, it is highly contested, with some disputing that it even counts as "science". So far, no one has proposed any way to test for its existence, or make any falsifiable predictions using it, and such things might even be impossible. In an infinitely diverse multiverse, anything that can happen ''will'' happen. Therefore ''any'' observation can be accounted for in a multiverse theory which, by definition, predicts anything and everything. While it ''sounds'' more scientific, objectively speaking there is no more reason to believe in an infinitely large and diverse multiverse than in a creator diety, or that reality is a simulation run by aliens. Therefore it is not science. It is merely an idea, or as cosmologist Paul Davies wrote: theology dressed up as science. Cosmologist George Ellis wrote, "Nothing is wrong with scientifically based philosophical speculation, which is what multiverse proposals are. But we should name it for what it is."

* ''Manga/Versus2022'' has a grim dark one. Humanity from the various worlds are being killed off by their own brand of monster—demons, robots, giants, giant moles, monster plants, a tree sapping the life of the planet, flying saucer aliens, a malevolent god, a plague poisoning the stars and everything in between. It is telling when the new world is a better alternative.

One could get the impression that the multiverse is a generally accepted scientific theory. In fact, it is highly contested, with some disputing that it even counts as "science". So far, no one has proposed any way to test for its existence, or make any falsifiable predictions using it, and such things might even be impossible. In an infinitely diverse multiverse, anything that can happen ''will'' happen. Therefore ''any'' observation can be accounted for in a multiverse theory which, by definition, predicts anything and everything. While it ''sounds'' more scientific, objectively speaking there is no more reason to believe in an infinitely large and diverse multiverse than in a creator diety, or that reality is a simulation run by aliens. Therefore it is not science. It is merely an idea, or as cosmologist Paul Davies wrote: theology dressed up as science. Cosmologist George Ellis wrote, "Nothing is wrong with scientifically based philosophical speculation, which is what multiverse proposals are. But we should name it for what it is".

* ''WebAnimation/FiveNightsAtFreddysForgottenEvents'': TheStinger in "Kings of the World" [[spoiler:shows the Nightmare animatronics looking in the Fnaf 2 location. Nightmare Freddy and Nightmare Bonnie are talking about one of their drones catching an animatronic and that Nightmare Freddy says that it was impossible for them to catch it. So Nightmare Bonnie says that [[WebAnimation/FiveNightsAtFreddysTheStories the multiverse]] is real]].

* ''Anime/TengenToppaGurrenLagann'': Three Words: Multi-Dimensional Labyrinth. The Anti-Spiral effectively flings the consciousnesses of every member of Team Dai-Gurren to [[LotusEaterMachine separate alternate realities without their true memories.]] According to the Anti-Spiral, these realities are "created instant-to-instant as they are perceived." It is also stated that the Anti-Spiral home world is hidden in-between the 10th and 11th dimensions. Finally, most of the final episode takes place [[spoiler: in a "super-spiral universe where thought is given form."]]

-->'''Ching''':''"Infinite universes, almost anything happens. ''Literature/DoctorFaustus'' happened somewhere, ''Literature/TheIliad'' happened somewhere, and ''Anime/NeonGenesisEvangelion'' happened somewhere. Your world was a darker story of what might have come next."''

** Also, in an earlier episode of ''WesternAnimation/{{Futurama}}'', there was another universe from across the edge of the universe -- where the Planet Express crew saw their counterparts dressed as cowboys. Fry asks if there is an infinite number of parallel universes and Professor Farnsworth says "No, just the one."

One could get the impression that the multiverse is a generally accepted scientific theory. In fact, it is highly contested, with some disputing that it even counts as "science." So far, no one has proposed any way to test for its existence, or make any falsifiable predictions using it, and such things might even be impossible. In an infinitely diverse multiverse, anything that can happen ''will'' happen. Therefore ''any'' observation can be accounted for in a multiverse theory which, by definition, predicts anything and everything. While it ''sounds'' more scientific, objectively speaking there is no more reason to believe in an infinitely large and diverse multiverse than in a creator diety, or that reality is a simulation run by aliens. Therefore it is not science. It is merely an idea, or as cosmologist Paul Davies wrote: theology dressed up as science. Cosmologist George Ellis wrote, "Nothing is wrong with scientifically based philosophical speculation, which is what multiverse proposals are. But we should name it for what it is."

* ''WebAnimation/FiveNightsAtFreddysForgottenEvents'': TheStinger in "Kings of the World" shows the Nightmare animatronics looking in the Fnaf 2 location. Nightmare Freddy and Nightmare Bonnie are talking about one of their drones catching an animatronic and that Nightmare Freddy says that it was impossible for them to catch it. So Nightmare Bonnie says that [[WebAnimation/FiveNightsAtFreddysTheStories the multiverse]] is real.

* Theories regarding a "multiverse" are popular with many scientists, particularly those who act as ambassadors with the general public. Many or infinite universes could help explain some features of our universe that are otherwise difficult to explain (e.g. it handily solves the "fine-tuning" problem: the unbelievably low probability that a universe with fundamental constants permitting the emergence of intelligent life would appear purely by chance. If an infinitely diverse multiverse exists, then it is not improbable at all: from an infinite set of dice rolls such a universe must necessarily appear, and only in those parts of reality where conditions are right would life arise to contemplate the question in the first place.)\\\

* Theories regarding a "multiverse" are popular with many scientists, particularly those who act as ambassadors with the general public. Many or infinite universes could help explain some features of our universe that are otherwise difficult to explain (e.g. it handily solves the "fine-tuning" problem: the unbelievably low probability that a universe with fundamental constants permitting the emergence of intelligent life would appear purely by chance. If an infinitely diverse multiverse exists, then it is not improbable at all: from an infinite set of dice rolls such a universe must necessarily appear, and only in those parts of reality where conditions are right would life arise to contemplate the question in the first place.) One could get the impression that the multiverse is a generally accepted scientific theory. In fact, it is highly contested, with some disputing that it even counts as "science." So far, no one has proposed any way to test for its existence, or make any falsifiable predictions using it, and such things might even be impossible. In an infinitely diverse multiverse, anything that can happen ''will'' happen. Therefore ''any'' observation can be accounted for in a multiverse theory which, by definition, predicts anything and everything. While it ''sounds'' more scientific, objectively speaking there is no more reason to believe in an infinitely large and diverse multiverse than in a creator diety, or that reality is a simulation run by aliens. Therefore it is not science. It is merely an idea, or as cosmologist Paul Davies wrote: theology dressed up as science. Cosmologist George Ellis wrote, "Nothing is wrong with scientifically based philosophical speculation, which is what multiverse proposals are. But we should name it for what it is."

* ''WebAnimation/FiveNightsAtFreddysForgottenEvents'': TheStinger in "Kings of the World" shows the Nightmare animatronics looking in the Fnaf 2 location. Nightmare Freddy and Nightmare Bonnie are talking about one of their drones catching an animatronic and that Nightmare Freddy says that it was impossible for them to catch it. So Nightmare Bonnie says that the multiverse is real.

* ''WesternAnimation/StarVsTheForcesOfEvil'': Star boasts she's "a magical princess from another dimension" in the series premiere, and her adventures with Marco occasionally take the two of them and their friends to other dimensions. The most common form of travel between dimensions is apparently "dimensional scissors", which are forged by Hekapoo of the Magic High Commission and given to those she feels worthy. Some people, like [[DemonLordsAndArchDevils Tom]] and eventually Star, can make interdimensional portals under their own power. The only other way known is [[spoiler:though the Realm of Magic, which has permanent passageways connecting Earth and Mewni at the very least.]]