History Main / TheEarthPrimeTheory

* ''WesternAnimation/JusticeLeagueCrisisOnTwoEarths'' has [[StrawNihilist Owlman]], who wants to [[EarthShatteringKaboom use]] [[SwordOfDamocles the QED]] on Earth Prime, thus wiping out all life. His reason for this is that he learned that any choice made by anyone creates a separate parallel universe for each possible outcome and decided that the only truly meaningful choice that anyone could possibly make is to destroy everything (it doesn't matter that another Owlman will choose ''not'' to destroy everything since he would also be destroyed). [[spoiler:When Batman foils his plan by sending him and the bomb to another universe where Earth is a frozen wasteland devoid of all life, Owlman has plenty of time to stop the countdown and save himself. Realizing that no matter what he chooses to do, another Owlman will make the opposite choice, he snarks, "[[FamousLastWords It doesn't matter]]," and lets himself die]].

* In ''TabletopGame/MagicTheGathering'', the plane Dominaria is the Nexus of the Multiverse, situated at the center of the Multiverse. Events on Dominaria reverberate throughout the Multiverse; most notably during the Time Spiral arc where its imminent destruction would have destroyed the rest of the Multiverse with it, and even fixing it turned ''all'' [[DimensionalTraveller planeswalkers]] from PhysicalGods into merely gifted mages. Unusually for this trope, it's not Earth at all, but was a StandardFantasySetting until the plot turned it [[AfterTheEnd post apocalyptic]]. Nor was it always the Nexus; there are planes, such as Equilor, which are older than Dominaria.

* The ''Fanfic/PonyPOVSeries'' chapter "Applejack's Dream" establishes the existence of a "Heart World" from which the Pony POV Series world and all other AlternateTimelines diverged from and which anyone still connected to is affected by, implied to be the main series timeline. However, in an interesting twist, it is possible for a world to "break off" and continue on its own without any connection to the Heart World. The plot of that chapter involved preparing for the possibility that would happen so as to [[spoiler:prevent Applejack from going insane and turning into Nightmare Mirror in the event that it did.]] [[spoiler:This later bites Nightmare Eclipse in the flank when her plan has basically made her the Heart World Nightmare Eclipse, and tied all her other selves to her -- in other words, defeating her defeats ''all'' versions of her.]]

Related to ExpendableAlternateUniverse. Compare CosmicKeystone and NoOntologicalInertia. Of course, there are [[TimeyWimeyBall Time Travel Paradoxes]] and {{Logic Bomb}}s abound in this theory, so it definitely requires some WillingSuspensionOfDisbelief. Theoretically, the very act of doing that, would simply create ANOTHER infinite number of possibilities. Therefore, destroying everything ''should'' be impossible ([[TheDeterminator of course, that won't stop the villain from trying]]).

** It's later posited that Franchise/{{Superman}} is the axis around which the entire Metaverse/Multiverse turns. ''Every'' universe has some variation of Superman, even if it's simply as a comic book character (so yes, that includes ''our'' universe). And even if some timeline or universe currently lacks a Superman or Superman analogue, eventually one will show up or appear, even if it's DimensionalTraveler from an entirely different universe.

* In Steven King's ''The Dark Tower'', Keystone Earth is and equivalent name for this trope (but it was named differently first); named for a version of Earth (The Real World) with no magic, having excess of bullets, and where animals don't talk anymore (except on commercials- which in this case they actually don't actually talk).

* The ''ComicBook/SonicTheHedgehog'' comic book has Mobius Prime, which all other parallel worlds (called Zones) are based off. Interestingly, despite the franchise starting with video games, Mobius Prime is the comic's Zone and not the one of the games. It's unknown how far this has stuck after the ContinuityReboot, as the entire multiverse has collapsed in on itself.

Related to ExpendableAlternateUniverse. Compare CosmicKeystone and NoOntologicalInertia. Of course, there are [[TimeyWimeyBall Time Travel Paradoxes]] and {{Logic Bomb}}s abound in this theory, so it definitely requires some WillingSuspensionOfDisbelief. Theoretically, the very act of doing that, would simply create ANOTHER infinite number of possibilities. Therefore, destroying everything ''should'' be impossible ([[TheDeterminator of course, not that it won't stop a villain from trying]]).

Related to ExpendableAlternateUniverse. Compare CosmicKeystone and NoOntologicalInertia. Of course, there are [[TimeyWimeyBall Time Travel Paradoxes]] and {{Logic Bomb}}s abound in this theory, so it definitely requires some WillingSuspensionOfDisbelief. Theoretically, the very act of doing that, would simply create ANOTHER infinite number of possibilities. Therefore, destroying everything ''should'' be impossible.

[[folder:Live Action TV]]

* In ''Series/{{Sliders}}'' Earth Prime is ''our'' Earth, which the protagonists originate from.

* The ''ComicBook/SonicTheHedgehog'' comic book has Mobius Prime, which all other parallel worlds (called Zones) are based off. Interestingly, despite the franchise starting with video games, Mobius Prime is the comic's Zone and not the one of the games. It's unknown how far this has stuck after the ContinuityReboot.

** Pre-Crisis ''Franchise/WonderWoman'' storyline ''ComicBook/JudgmentInInfinity'' establishes that the main universe Earth-One is the multiverse's keystone; and if it's destroyed, all alternate Earths will follow.

* Creator/{{Stephen King}}'s ''Literature/{{Dark Tower}}'' books establish there are two - one where most of the action takes place, in which the Tower manifests as an actual tower; and the other, Keystone Earth, is explicitly our world, in which Stephen King is writing the adventures of the characters in the other universe. Should the Tower in either of these worlds be destroyed, all reality will topple.

* In Steven King's The Dark Tower, Keystone Earth is and equivalent name for this trope (but it was named differently first); named for a version of Earth (The Real World) with no magic, having excess of bullets, and where animals don't talk anymore (except on commercials- which in this case they actually don't actually talk).

[[folder: Literature ]]

[[folder: Live Action TV ]]

[[folder: Tabletop Games ]]

[[folder: Western Animation ]]

[[folder: Anime ]]

[[folder: Comic Books ]]

[[folder: Fan Fic ]]

* In ''TabletopGame/Warhammer40k'', the dark gods of chaos are in war to be the one eater to eat them all, but the issue comes from the level they want to eat everything. Not only do they want to consume each other, but they want to expand their sphere of reality to the entirety of the warp (imaterum) and the material universe (materium), which is theorized, in universe, to destroy the fabric of both realities. This could actually destroy not only both dimensions but other dimensions and all of reality, making them franchise ending threats as this could exceed the damages of just an untold number of universes being wrecked. It does not seem that it is there goal to destroy everything and them selves though, but would probably not listen to (or be capable of) the warnings regardless.

* ''WesternAnimation/JusticeLeagueCrisisOnTwoEarths'' has [[StrawNihilist Owlman]], who wants to [[EarthShatteringKaboom use]] [[SwordOfDamocles the QED]] on Earth Prime, thus wiping out all life. His main goal is to make the only choice that matters (in his own twisted mind), as there won't be an alternate version of him making the opposite choice (his problem with the multiverse). [[spoiler:When Batman foils his plan by sending him and the bomb to another reality, where Earth is a frozen wasteland, he intentionally gives Owlman a chance to stop the countdown. Realizing that, no matter what he does, another Owlman will do something else, he lets himself die.]]

* In Anime/YuGiOhArcV it is revealed that [[spoiler: there are alternative dimensions in the Yu-Gi-Oh! franchise; also, the Arc-V worlds called Standard, Fusion, Synchro and Xyz dimensions were once a single world - Original dimension - which split into these 4 ramifications but disappeared in the process.]]

* As of ''ComicBook/FiftyTwo'', the Creator/DCComics multiverse hinges on "New Earth" - not just a specific universe, but a specific planet in that universe. This becomes a plot point shortly afterwards in the ''ComicBook/SinestroCorpsWar'', where Sinestro wants to conquer Earth for this very reason.
** Interestingly, DC's comic multiverse has generally not run on the constant temporal divergence model; ''Comicbook/CrisisOnInfiniteEarths'' established that the universes of the pre-Crisis multiverse diverged at the Big Bang, making ''that'' the point to attack, while ''52'' established that the new multiverse began as 52 identical Earths that got cosmologically edited.
** Note that "Earth Prime" refers to another universe altogether that's like ours, where superheroes don't exist outside of comics. In some stories, it ''is'' "our" Earth for all intents and purposes. And it '''was''' actually destroyed in ''ComicBook/CrisisOnInfiniteEarths''. It came back as Earth-33 of the DC multiverse in ''Comicbook/TheMultiversity''.
---> '''[[WebVideo/AtopTheFourthWall Linkara]]:''' Yeah, that wave of antimatter that completely annihilated the universe was a bitch to clean up the next day, let me tell you!

* In the ''ComicBook/AllNewAllDifferentMarvel'' era, Earth-616 was reclassified as Prime Earth, due to it being the first Earth recreated by [[spoiler:the Beyonder-powered Reed Richards]]. This still doesn't give it any more cosmic significance though, it only means this is where the world displaced characters are most likely to end up (some people even kept referring to it by its old number).

* The ''[[ComicBook/SonicTheHedgehog Sonic]]'' comic book has Mobius Prime, which all other parallel worlds (called Zones) are based off. Interestingly, despite the franchise starting with video games, Mobius Prime is the comic's Zone and not the one of the games. It's unknown how far this has stuck after the ContinuityReboot.

** In ''Multiversity''[=/=]''Comicbook/TheNew52'' continuity the main Earth is sometimes called Prime Earth (as well as New Earth and Earth-0), Earth-Prime having been renamed as above. It's described in ''The Multiversity Guidebook'' as "the foundation stone of the multiversal structure".

** In ''Multiversity''[=/=]''Comicbook/TheNew52'' continuity the main Earth is sometimes called Prime Earth (as well as New Earth and Earth-0), Earth-Prime having been renamed as above. It'd described in ''The Multiversity Guidebook'' as "the foundation stone of the multiversal structure".