->'''Yugi:''' So let me get this straight: According to [[NoFourthWall this show]], the [[Myth/EgyptianMythology Egyptian Gods]] are ''real''.
->'''Shadi:''' Yes.
->'''Yugi:''' But, doesn't that mean that all other religions are wrong? And the hokey Ancient Egypt religion is the only real one?
->'''Shadi:''' Yes.
->'''Yugi:''' Huh. [[DidntSeeThatComing Didn't see THAT one coming.]]
->'''Shadi:''' ''I'' did!
-->--''WebVideo/YuGiOhTheAbridgedSeries''

A fantasy setting with a premise that one particular mythology is an approximation of the truth, usually with some plot-relevant differences. This is often a mythology associated with a mainstream religion.

If this is done to more than one mythology in one setting, then it is a CrossoverCosmology. If ''all'' of the stories are right, you have a FantasyKitchenSink and AllMythsAreTrue.
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!!Examples:

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[[folder:Comic Books]]
* ''ComicBook/TheChroniclesOfWormwood'' to Christianity.
* The ''Franchise/{{Tintin}}'' series' ''Recap/TintinTheSevenCrystalBalls'' and ''Recap/PrisonersOfTheSun'' have a real-world voodoo curse in effect, albeit attributed to Incas.
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[[folder:Fanworks]]
* FanFic/UchibiSasuke includes what seems to be traditional Asian mythology, as seen through the lens of the game Ookami.
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[[folder:Films -- Live-Action]]
* The film ''Film/{{Constantine}}'' does this for [[ChristianityIsCatholic Roman Catholicism]]. In contrast to the original ''ComicBook/{{Hellblazer}}'' comic book where AllMythsAreTrue.
[[/folder]]

[[folder:Literature]]
* ''Literature/ExpectingSomeoneTaller'', by Creator/TomHolt, to the Germanic pantheon.
* Creator/NeilGaiman's works:
** ''Literature/GoodOmens'' to Christianity (mostly of a heavily Milton-influenced variety). Its SwitchingPOV protagonists include an angel, a demon, and the Antichrist.
** Literature/AnansiBoys, focuses on the concept that West African mythology (and all named spiders and panthers that go along with it) do exist in the modern day. (Unless they're dead.) The protagonist is the son of the trickster spider god Anansi.
* Creator/JRRTolkien's early drafts of ''Literature/TheSilmarillion'', published in ''Lost Tales I&II'', are a clever inversion of this: Through a series of events and battles that are echoed mainly in Norse and Finnish mythology [[spoiler: Middle-Earth becomes our world. Tol EressŽa becomes England, Kortirion especially is identified as Warwick, and Elves still exist. The tales that ∆lfwine/Eriol is told are the true pre-history of the world and later fictionalized among humans.]] This was toned down significantly to the point of near-abandonment in later drafts, though the fading of the Elves and the gradual dominion of humans remains a prevalent theme. Also impossible to get rid of completely: Some cunning linguists pointed out that a huge number of Tolkien's Eldarin word roots are built to act as predecessors of reconstructed Indo-European, theoretically transporting the idea of early humans using language they were taught by the Elves into the real world. See Faramir's quote on all speech of the world being Elvish in origin.
* ''Literature/TheSpaceTrilogy'' by C. S. Lewis explicitly has Greco-Roman mythology be a reflection of the celestial politics of the Solar System.
* ''Creator/RickRiordan'''s works pretty much all feature this trope:
** ''Literature/PercyJacksonAndTheOlympians'' to ancient Myth/GreekMythology. Percy Jackson is a son of Poseidon who, along with his friends, has to prevent the titan Kronos from destroying the world.
** ''Literature/Heroes of Olympus'', the SequelSeries, blends in Roman mythology, introducing the Roman alter egos of the Greek Gods and Camp Jupiter, a Roman parallel to Camp Half-Blood.
** ''Literature/TheKaneChronicles'' to Myth/EgyptianMythology. Carter and Sadie Kane run into just about every major Egyptian god in the pantheon. It's a SharedUniverse with ''Percy Jackson'', so while AMythologyIsTrue in the context of each individual work, it becomes a CrossoverCosmology at the meta-level.
* Creator/RogerZelazny did this several times:
** ''Literature/BringMeTheHeadOfPrinceCharming'' (co-authored by RobertSheckley), to Christianity -- or its ThemeParkVersion. Mostly PlayedForLaughs.
** ''Literature/CreaturesOfLightAndDarkness'' to Myth/EgyptianMythology - in the far, far future.
** ''Literature/EyeOfCat'' to NativeAmericanMythology -- in a far future, though nowhere near as far as the previous entry.
** ''Literature/LordOfLight'' pretends to do this, using Myth/HinduMythology, except that the Gods are actually humans with psychic powers and advanced technology.
** Implied though not outright stated in the Literature/ChroniclesOfAmber series. A close variation on Camelot is explicitly shown, and the various Princes are archetypal enough that one could fit them into various pantheons in Shadow with just a bit of a twist: Julian would be a hunter god, Benedict would be a war god, Oberon would be the ruler god, and so on.
* Welsh mythology in ''Literature/TheDarkIsRising''. More or less.
* ''Literature/JonathanStrangeAndMrNorrell'' at the very least presents as true English legends concerning TheFairFolk, and Merlin is referenced as being a real person. At least, because in the story collection ''The Ladies of Grace Adieu and Other Stories'', there is a {{Crossover}} with ''Literature/{{Stardust}}'', and Creator/NeilGaiman at least has placed ''Literature/{{Stardust}}'' within his AllMythsAreTrue 'verse.
* In Creator/DouglasAdams' ''Literature/TheLongDarkTeaTimeOfTheSoul,'' all the Norse gods and legends are true. Also involves a subversion of GodsNeedPrayerBadly, as Thor comments at one point that humanity created the gods, but just because we no longer need them doesn't mean they go away.
* In Creator/TerryPratchett's [[PunnyName Djelibeybi]], the FantasyCounterpartCulture of Egypt, all myths are true concerning their gods, which have been evolving and developing for seven thousand years. The priests are said to "never throw away a god in case they turn out to be useful" and to be able to "give headroom to a collection of ideas that would have made a theoretical physicist give in and hand in his badge" (paraphrased).

[[/folder]]

[[folder:Live Action TV]]
* ''Series/{{Supernatural}}'' is an interesting case which can't decide whether it's this trope or AllMythsAreTrue. Earlier seasons seem to imply the latter, with the characters explicitly stating that "almost all cultures" have lore of some kind about the MonsterOfTheWeek, with only slight variations. However, later seasons seem to run on the basis of Christianity (with God, angels, and Lucifer).
** A season 5 episode even addresses this issue with a gathering of gods from other/more ancient religions being mad that the Judeo-Christian apocalypse is going to end the world instead of their ''own'' religion's version of the apocalypse.
*** However, the fact that [[spoiler:Lucifer promptly [[CurbStompBattle slaughters them]]]] seems to suggest that Christianity still comes out on top.
** It seems that ''neither'' the angels nor demons nor pagan gods are truly "gods" but rather creatures that have been worshiped as such over time. Some angels mentioned that they came from elsewhere and took over from the old gods; Death claims to be as old as God.
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[[folder:Tabletop Games]]
* ''TabletopGame/NewWorldOfDarkness'' actually discuss this in their splatbook about demons. It's up to the Storyteller ''which'' religion is true in regard to the myth of demons, as long as the players are cool with it. This is a considerable improvement compared to ''DemonTheFallen'', which says that "demons are based on Christian lore, but the Christian lore of OWOD is not the Christian lore of RealLife".
[[/folder]]

[[folder:Video Games]]
* ''VideoGame/GodOfWar'' to Myth/{{Greek mythology}}.
** Although WordOfGod has said it's a case of AllMythsAreTrue.
* ''VideoGame/{{Touhou}}'' and Myth/JapaneseMythology. If you ignore [[EarlyInstallmentWeirdness the earlier games]], anyway.
* ''VideoGame/{{Darksiders}}'' is this to Literature/TheBible and its Literature/BookOfRevelation.
[[/folder]]

[[folder:Web Original]]
* Lampshaded in ''WebVideo/YuGiOhTheAbridgedSeries''.
** Although [[NotAnExample not quite true]] for the [[YuGiOh source material]] itself. Aside from their version of Egyption mythology basically just being the ThemeParkVersion, a filler arc introduces {{Atlantis}}, and later series have, among other things, the Aesir, who are basically the Norse God Cards.
*** Actually Atlantis, while originally recorded by Plato, was attributed to the Egyptians, making that cross-over valid. The Aesir, less so.
* The ''Wiki/SCPFoundation'' has quite a lot of objects that are obviously beings from Literature/TheBible, but almost none for any other mythology.
[[/folder]]

[[folder:Western Animation]]
* In ''WesternAnimation/SouthPark'', the Mormons are right.
** In the episode "Best Friends Forever", that changed when they needed more soldiers to join in the battle against Satan's legion of Hell, and Mormons aren't fighters. Considering that it's ''South Park'', things went back to the way they were, not that soldiers aren't needed.
[[/folder]]
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