History Main / DaysOfFuturePast

* The ''Franchise/{{Dune}}'' series by Frank Herbert. The neo-medieval nature of the [[AbsentAliens human]] interstellar Imperium was explained in detail in the novels, but handwaved in the [[Film/Dune1984 film]] and [[Series/FrankHerbertsDune TV miniseries]]. The main historical parallel to the Imperium is the UsefulNotes/HolyRomanEmpire of the European Middle Ages, [[CultureChopSuey though elements from various other historical empires, nations and societies]] [[CocaPepsiInc are all over the place...]]

** ''Traveller'' in many ways looks more like UsefulNotes/TheBritishEmpire what with the British noble titles, the [[SpaceIsAnOcean nautically derived traditions]] the exploration and colonization, and the wild frontier regions. Also the relation of the Imperium to it's member worlds seems more British then Roman. Traveller also has a FeudalFuture and the nobles have real power.

* The culture of Nostrilia, from the Creator/CordwainerSmith novel of the same name, takes its name, language and many of its customs from the North Australia of the 19th and early 20th Centuries.

* ''All The Things I've Done'' by Gabrielle Zevin takes place in Manhattan in the late 21st century, but has more elements of TheRoaringTwenties only without the "roaring" part. However, instead of alcohol being prohibited, it's chocolate and coffee that are prohibited(the main character's family runs a chocolate factory). In fact several offhand comments made by older characters suggest that the world is, in fact, stagnant.
* Most books written by french far right author Guillaume Faye advocate for the building of a ''Days Of Future Past'' Society. Faye dubs his plan "Archeofuturism" (Antique/Ancient Future) Right wing sites like Counter Currents frequently compare Fayes plans to Dune.

* ''Literature/{{Victoria}}'', set in the 2030s, has strong tendencies toward this. There is a general monarchist revival, with [[UsefulNotes/ImperialRussia Russia]], [[KaiserReich Germany]] and [[UsefulNotes/ImperialJapan Japan]] (among other nations) restoring their old imperial systems of absolute monarchy; various archaic political systems, from Nazism and Communism to theocracy, enjoying their own resurgences; and, as modern society collapses, old ways of living seeing a renaissance. The setting even has an actual nation of [[LadyLand Amazons]]! The Northern Confederation, the [[DEsignatedHero "hero"]] faction of the book, implement an Articles of Confederaton-style, bare-bones libertarian republic based on yeoman farming, steam-powered rail and [[SchizoTech cold-fusion-powered airships]] that looks like a positively {{Arcadia}}n vision of small-town America in the Fifties... [[CrapsaccharineWorld if you ignore how they treat women, non-white people and anyone who isn't their sort of people.]]

* ''Anime/CodeGeass'' has something of a mild example -- a mid-21st-century style of technology with giant robots, matched with a Victorian-esque society, in Britannia. The other countries are behind them in both society and technology, and would not be an example.

* ''Franchise/{{Gundam}}'':
** Works set later on in the Universal Century shows an Earth Sphere that's increasingly reminiscent of Japan's Sengoku period as European-style aristocracy makes a comeback. By ''Victory Gundam,'' the situation's reached the point where the Sides are independent nations in all but name, and the Earth Federation has to ally with a militia to fend off an invasion.
** By ''[[Manga/MobileSuitCrossboneGundam Dust]]'', which takes place after ''Victory'', the parallels aren't even hidden anymore, as the period it's set in is literally called "The Age of Warring Space States", though that term is sometimes also used to refer to ''all'' post-''[[Literature/MobileSuitGundamHathawaysFlash Flash]]'' conflicts, which would include ''[[Anime/MobileSuitGundamF91 F91]]'', ''[[Manga/MobileSuitCrossboneGundam Crossbone]]'' and the aforementioned ''[[Anime/MobileSuitVictoryGundam Victory]]''. But ''Dust'' fits best, as all of the sides are now officially independent and constantly warring with each other.
* ''Anime/FantasticChildren'' has this trope. The Greecians bodies are capable of assimilating technology, they can even locate the souls of dead Greecians and humans and beam them back into their respective bodies. What do they fight with? Swords. What do they wear? just about anything medieval. Also, the planet of Greecia is a monarchy. King's word is law, even if it leads to the main problems in the series and makes everybody suffer in the long run. Yep.

* ''The Literature/DragonridersOfPern'' series by Creator/AnneMcCaffrey. Pern was settled in Earth's future, but reverted to a technologically inferior mostly feudal society, partly due to the intent of the colonists, and partly due to the scourge of Thread. Most people live in natural and man-made cave systems carved out of cliffs[[note]]Thread can't consume non-living material, and they had neither the resources nor the infrastructure to build metal buildings[[/note]] called Holds. The Lord Holders are in charge of protecting and caring for the people under them, and the position is hereditary. Skilled workers live separately, in Crafthalls, similar to Guilds. The eponymous Dragonriders also live apart from Holders, and have their own system of governing themselves.

* The Instrumentality of Mankind sequence by Creator/CordwainerSmith is an interesting subversion, as the humans of the far future are, after living some centuries in a nondistinct, cultureless utopia, actively trying to resurrect the cultures of the past.
* The Queendom of Sol in Creator/WilMcCarthy's "Collapsium" and its sequels.
* In L. Neil Smith's ''Henry Martyn'', ''Bretta Martyn'' and their WebComic sequel, ''Phoebus Krumm'' the Monopolity of Hanover is based on Tudor England while its rival, the Jendyne Empery-Cirot is based on Spain of the same period.
* ''Literature/ACanticleForLeibowitz'', which is about a [[BadFuture future Earth]] set [[AfterTheEnd in the aftermath]] of a [[ApocalypseHow nuclear war]]. In the first third of the book, set 600 years after the apocalypse, the world resembles Dark Age-Europe, being divided between petty kingdoms and warlords with only an order of monks [[FlingALightIntoTheFuture preserving pre-apocalypse knowledge]]. The next part, taking place 600 years later, has humanity partially recovering to an Early Modern level of civilization.
* Literature/TheTripods trilogy is a prime example of this. It takes place about 100 years in the future, but society is largely medieval style due to the effect of the Caps on their wearers--curtailing curiosity and causing them to reject technology.

* ''Literature/TheDinosaurLords'', while set in world that looks like Medieval-esque Europe (albeit less prudish and more agnostic one) with dinosaurs, strongly implies that it's in fact the future, with "magic" being ClarkesThirdLaw-abiding tech and Paradise being a colony that regressed technologically. There are even nations such as Spaña, Irysh, Anglysh, Slavia etc.
* ''Literature/QueenOfTheTearling'' takes place in a society with medieval-level technology but with knowledge of genetics and other advanced concepts. This is because the people arrived in this land from a dystopian future America, and lost a lot of advanced technology in the process (but retained some of the knowledge and history). Despite beginning their new society with egalitarian ideals, over the centuries it has fallen apart into several monarchies, leaving the majority of the people illiterate and at the mercy of a selfish, short-sighted noble class.
* ''Literature/TrinityBlood'' is a ''Renaissance Future'', with Vatican States = Italy, Methuselah Empire = Ottoman Empire, and Albion = England.

* ''TabletopGame/Warhammer40000'': Post-Constantine Rome. Its better days are behind it, technological advancement has slowed to a crawl, and the Imperium is facing threats inside and out but perhaps [[spoiler:Roboute Guilliman's]] return may help. For more specific examples, feudal worlds or μ-class planets, as they are dependent on local agriculture and the most advance tech are black powder guns and cannons. These worlds make for little use or need but some are used to find new recruits for {{Space Marine}}s from the nobles and warriors and may also be a Knight World, having warrior-noble houses pilot [[MiniMecha Knights]] to defend their countries and fight for the Imperium of Man.

* ''TabletopGame/MutantChronicles'' has some of its Mega Corps having feudal themes. Bauhaus is based off of several Renaissance-through-19th-Century European countries, Imperial is based off a mix of Elizabethan and Victorian Imperial British, Mishima is Edo-era Japan with a few other East-Asian (mostly Chinese) elements.

* ''WesternAnimation/AdventureTime'' is set in a mostly-FeudalFuture, divided into various monarchies run by what would seem to be the descendants of those who survived, mutated by [[UsefulNotes/NuclearWeapons The Great Mushroom War]].

* ''Anime/SamuraiSeven'' combined the feudal era elements of the Kurosawa movie it was based on with HumongousMecha. Think peasants farming rice by hand being raided by massive cyborgs aloft with anti-grav.

* The manga series ''Basara'' takes place in what at first appears to be a fantasy world inspired by feudal Japan. As it's later revealed, it's actually Japan in a post-apocalyptic future.

* Planet Oedo from ''Manga/EdensZero'', right down to its name just being Tokyo's medieval name. The planet itself hardly deviates from real-life Edo one bit; it's just that the rest of the known cosmos has already entered the space age, and thus the planet is seen as "primitive" by comparison.

* In ''TabletopGame/MutantChronicles'' the Mishima MegaCorp is based of Feudal Japan with Samurais who strictly follow the Bushido code.
* The ''Three Galaxies'' setting of ''TabletopGame/{{Rifts}}'' has the Oni race, space-faring aliens based off a mixture of ancient and modern Japan. They have Samurai-inspired {{Cyborg}}s called Cyberai, their economy is almost entirely based off corporations called ''zaibatsu'', and their empire is known as the Bushi Federation.;

* While ''VideoGame/MetalGearRisingRevengeance'' takes place in a near future Earth that mostly matches modern politics and society, the characters and themes and especially the weapons and technology evoke the feeling of feudal Japan, complete with sword-wielding samurai cyborgs and characters who evoke the imagery of Buddhist and Hindu deities. There's even a section of one level where Raiden fights through a gratuitously-traditional Japanese village built in the middle of a corporate skyscraper in downtown Denver, Colorado.

* ''Manga/{{Trigun}}'', much like ''Firefly'', has a Wild West society with advanced technology, but here it's explained as humanity doing what it has to in order to survive on the desert world it's stuck on.

* Most of Creator/LeijiMatsumoto's works have elements of this. The most notable elements are Anime/CaptainHarlock's Cosmo Dragoon (whose looks are heavily based on the [[http://en.wikipedia.org/wiki/Colt_Dragoon_Revolver Colt Dragoon]]), and the recurring world Heavy Meldar (whose main city, hosting the [[Manga/GalaxyExpress999 space train]] station, is modeled on the stereotypical western town).

* ''Series/MaxHeadroom''. Lots of retro items still around (or recreated?) TwentyMinutesIntoTheFuture.
* If one considers the plight of the Colonial fleet as analogous to the Mormon migration to Utah (in keeping with the strong Mormon themes throughout the show), then the original ''Series/{{Battlestar Galactica|1978}}'' also qualifies.

* ''VideoGame/{{Borderlands}}'' presents this theme through a desert planet inhabited by bandits and many guns, of which Jakobs brand guns fit the aesthetic. ''VideoGame/Borderlands2'' even presents a Western-themed area with a vigilante sheriff, trains running through and even a showdown.

* Not to mention ''WesternAnimation/AdventuresOfTheGalaxyRangers''.

* In a milder example, ''Anime/MartianSuccessorNadesico'''s ShowWithinAShow, ''Anime/Gekiganger3'', despite being almost identical to the 1970s SuperRobot anime it parodies, is said to have premiered in the year 2096.

* In ''Anime/{{Avenger}}'', the civilization on Mars seems an awful lot like the city-states of ancient Greece.
* Coming back to ''Anime/CowboyBebop'' again, the cities on Mars almost look indistinguishable from current terrestrial ones. They borrow from many examples such as New York and Hong Kong.
* While technologically advanced as you'd expect for the 5000s CE, the society and culture of ''Anime/{{Gankutsuou}}'' resembles the 19th-century France of Dumas' original novel -- just with space ships instead of carriages, and nobles' country retreats on other planets. The anime begins with a fancy noble ball ''on the moon.''

* ''Film/DarkCity'', ''Film/{{Brazil}}'', and ''Film/{{Gattaca}}'' all show a particular kind of this trope, focusing on a '20s and '30s FilmNoir look, inspired by GermanExpressionism.

* Creator/PiersAnthony's ''Cluster'' series had, as a rule of space colonization, that civilizations would regress in proportion to their distance from the original home planet. ItMakesSenseInContext, up to a point, except that they regressed ''exactly'' back into the history books; X light years away, you had atomic-age planets; further away than that, you had industrial revolution planets; further away than that, you had medieval planets; all the way out to the edge, where you have caveman planets.

* The ''Space Captain Smith'' series by Toby Frost is about a hero of the British Space Empire. On the covers he's shown in a red uniform, circa 1880, carrying a rifle that looks like a 19th century weapon with a futuristic scope attached.

* The urban areas of the Mars of Creator/IanMcDonald's ''Desolation Road'' and ''Ares Express'' have a very Jazz Age feel to them, including the planet's most popular musician being Music/GlennMiller, [[BeethovenWasAnAlienSpy who is inexplicably alive in the 28th century]] and [[{{Zeerust}} the music of the revolution being swing jazz, salsa and samba]].
* This trope isn't too heavily used in ''Literature/HonorHarrington'', but several of the societies described have specific historical parallels. The People's Republic of Haven takes on some of the characteristics of revolutionary and Napoleonic France, while the Star Kingdom of Manticore's society and military parallels the United Kingdom during the same era. There's also the emperor of an overwhelmingly ethnic Chinese interstellar polity who nonetheless modeled his empire after Prussia and the German Empire. Before the time period of the novels, Grayson was a moderately-backwards colony akin to feudal Japan, changing to pseudo-Meiji Japan during their first appearance. Other "neobarb" colonies that have lost contact with the outside world and regressed technologically are also shown. And, of course, the space technology of the novels, at least in early books, is set up precisely to allow classic Age of Sail battles in space.

* ''All The Things I've Done'' by Gabrielle Zevin takes place in Manhattan in the late 21st century, but has more elements of TheRoaringTwenties only without the "roaring" part. However, instead of alcohol being prohibited, it's chocolate and coffee that are prohibited(the main character's family runs a chocolate factory). In fact several offhand comments made by older characters suggest that the world is, in fact, stagnant.
* ''Literature/JulianComstock'' by Creator/RobertCharlesWilson presents an America that has regressed both technologically and socially to a mid-19th-century level due to the exhaustion of the world's oil supply.
* Most books written by french far right author Guillaume Faye advocate for the building of a ''Days Of Future Past'' Society. Faye dubs his plan "Archeofuturism" (Antique/Ancient Future) Right wing sites like Counter Currents frequently compare Fayes plans to Dune.
* The mixing of the historical and the futuristic is a reoccurring motif in ''Literature/AeonLegionLabyrinth''. [[ShiningCity Saturn City]], a city state founded by time travelers, has a culture that is a mix of Arabic, Latin, and Greek influences. The Aeon Legion who act as TimePolice use swords with DeflectorShields and even take on squires. Even the setting itself, called the [[PlaceBeyondTime Edge of Time]], is a place where all time blends together.
* ''Literature/{{Victoria}}'', set in the 2030s, has strong tendencies toward this. There is a general monarchist revival, with [[UsefulNotes/ImperialRussia Russia]], [[KaiserReich Germany]] and [[UsefulNotes/ImperialJapan Japan]] (among other nations) restoring their old imperial systems of absolute monarchy; various archaic political systems, from Nazism and Communism to theocracy, enjoying their own resurgences; and, as modern society collapses, old ways of living seeing a renaissance. The setting even has an actual nation of [[LadyLand Amazons]]! The Northern Confederation, the [[DEsignatedHero "hero"]] faction of the book, implement an Articles of Confederaton-style, bare-bones libertarian republic based on yeoman farming, steam-powered rail and [[SchizoTech cold-fusion-powered airships]] that looks like a positively {{Arcadia}}n vision of small-town America in the Fifties... [[CrapsaccharineWorld if you ignore how they treat women, non-white people and anyone who isn't their sort of people.]]
* Creator/TomKratman's ''Literature/{{Caliphate}}'' is set during the 2100s where [[{{Eurabia}} Western Europe is governed by a totalitarian Islamic regime]] whose government and social structure emulate 7th-Century values promoted by leaders who wish to emulate a purer time during the birth of Islam. The Caliphate does access to some advanced technology like military aircraft and cyborgs, but none of it is produced by them and is imported from abroad. On a whole, they are considered to be backwards to literally everyone else in the setting, as the Caliphate is still reliant on manual slave labor while the USA has self-driving cars and China has developed clones and artificial humans.

* ''Series/{{Caprica}}'' followed ''Film/{{Gattaca}}'' in making its futuristic society look like 1950s or early '60s USA in terms of fashion and product design. Officially, this was CulturalTranslation combined with DirectLineToTheAuthor: ''Series/{{Battlestar Galactica|2003}}'' had used 2000s USA fashions and ''Caprica'' was set a few decades before, so the design choices were supposed to put us in the mindset of an earlier era.

* The setting of the ''VideoGame/IronGrip'' games is a [[PlayingWithATrope mostly]] [[MedievalEuropeanFantasy feudal]] SteamPunk LowFantasy world, but it's generally hard to pigeon-hole one or even two single historical eras it resembles the most. In broad terms, it has a blend of culture, architecture, tech and overall atmosphere that wouldn't look out of place in eras as varied as TheMiddleAges, UsefulNotes/TheRenaissance, the UsefulNotes/ThirtyYearsWar, UsefulNotes/TheNapoleonicWars, UsefulNotes/VictorianBritain, UsefulNotes/TsaristRussia, UsefulNotes/WorldWarI, UsefulNotes/WorldWarII, [[GenteelInterbellumSetting the decades between them...]] Not only CultureChopSuey, but full-blown [[AnachronismStew Era Chop Suey]] [[RuleOfCool as well]]...
* The {{generation ship}} in ''VisualNovel/AnalogueAHateStory'' regresses from a generally egalitarian society to one resembling the oppressive Joseon era, even to the extent of reverting from from Hangul to Chinese characters.

* ''Webcomic/ArthurKingOfTimeAndSpace'' transplants the cast of the Arthurian mythos into a futuristic Space Opera (among other things). This gives us a setting where medieval kings hold court on their starships, and knights joust with fighter craft, and fight space pirates. Then things get really weird when Merlin, a time traveler, reveals [[http://www.arthurkingoftimeandspace.com/1522.htm the entirety of Earth's history]] has been space-opera-fied as well; the earliest history anyone in the setting knows is the Eden Colony formed after the destruction of the theoretical origin planet, and Arthur gets to go back and visit Space Hercules on Planet Greece, plus Space Jesus, Space Noah, and many more.

* ''WesternAnimation/SamuraiJack'' is set in a BadFuture where robot Vikings exist side-by-side with hidden Spartan villages, futuristic versions of 1930's Chicago, and SouthernBelle {{Bounty Hunter}}s.

* The ''Franchise/{{Gundam}}'' works set later on in the Universal Century shows an Earth Sphere that's increasingly reminiscent of Japan's Sengoku period as European-style aristocracy makes a comeback. By ''Victory Gundam,'' the situation's reached the point where the Sides are independent nations in all but name, with the Earth Federation [[spoiler:seemingly]] inept to do anything about it.

* Some locales in the different ''Franchise/{{Gundam}}'' universes evoke the past 100 years to a certain extent. This is more blatant in ''[[Anime/MobileSuitGundamWing Gundam Wing]],'' and ''even more'' obvious (though justified) in ''Anime/TurnAGundam.''

* Several societies in Creator/SMStirling[='=]s ''Literature/{{Emberverse}}'' fulfill this trope although it also has a foot in FantasyCounterpartCulture as supernatural elements creep in during the second trilogy. The Clan [=MacKenzie=] is based on a New Age interpretation (much against the liking of its founder) of a Celtic clan, while the Portland Protective Association was deliberately created by an SCA member as a copy of a medieval feudal society with trappings of [[Literature/TheLordOfTheRings Mordor]]. The oddest example are the Dúnedain Rangers founded by a mildly insane Tolkien fangirl who has a quasi-religious reverence for his books. There are also several "Indian" tribes many of whose members have, at best, only nominal amounts of First Nations ancestry and Norrheim, a Viking style nation founded by Asatru. The Republic of Boise claims to be the successor to the original United States but its setup is much more like the Roman Republic, especially its military. Meanwhile over in England "Mad King Charlie" tried to turn what remained of his nation into something of a vast Rennaisance Faire, although his subjects drew the line at Morris dancing.
** Much of the interior of North America in the Emberverse, and by implication many areas elsewhere, have types of spontaneous neofeudalism; they just don't have the self-conciously archaic vocabulary of the PPA. Instead of "barons" and "knights" they have "sheriffs" and "farmers/Ranchers"; instead of "serfs" or "peasants" they have "refugees" or "evacuees". And they have "emergency governors" or "Presidents pro-tem" (popularly known as "bossmen") instead of Lords Protector or Kings.

* Literature/TheTripods trilogy is a prime example of this. It takes place about 100 years in the future, but society is largely medieval style due to the effect of the Caps on their wearers-curtailing curiosity and causing them to reject technology.

[[folder:Real Life]]
* TruthInTelevision: Some social reformers have deliberately attempted to re-create the past -- or at least the version of the past they idealized. Examples include the UsefulNotes/HolyRomanEmpire (an attempt to restore the Roman Empire -- "Kaiser" and "Czar"/"Tsar" are derivatives of "Caesar"), and Imperial Japan after Perry's arrival (an attempt to recreate the older Imperial Japan).
* Related to the above, some social critics (particularly those opposed to capitalism) fear and warn that a highly polarized gap between rich and poor in an increasingly stratified society with relatively high rates of unemployment and underemployment, rapidly undergoing industrial automation, could lead to near-future conditions similar to the pattern of social organization under the feudal aristocracies of TheDungAges, but with social media and smartphones.
* One of the main tenets of the French right-wing philosopher Guillaume Faye is that the future civilization will have to be rebuild this way after a cataclysm.
* Hebrew is the only known dead language to have experienced a full revival, due to its use as a CommonTongue among Jews emigrating to Palestine at the end of the 19th century. Before that point it was primarily taught as the liturgical language of Judaism.
[[/folder]]

* ''Literature/{{Safehold}}'' series has last humans settle on the eponymous planet without memories of their history and no space technology. Nine hundred years later world is close parallel of 15th-16th century world, with dominative Church of The God Awaiting (medieval catholicism JustForFun/InSpace). Charis takes place of Great Britain, Emerald is Ireland, Siddarmark is the young United States, Raven Lands are Germanies, Harchong mixes China with some Russian details and Desnair is Poland. Later it begins to emulate 30 Years War JustForFun/InSpace, although in more 18th -- early 19th century setting.

* Several societies in Creator/SMStirling[='=]s ''Literature/{{Emberverse}}'' fulfill this trope although it also has a foot in FantasyCounterpartCulture as supernatural elements creep in during the second trilogy. The Clan [=MacKenzie=] is based on a New Age interpretation (much against the liking of its founder) of a Celtic clan, while the Portland Protective Association was deliberately created by an SCA member as a copy of a medieval feudal society with trappings of [[Literature/TheLordOfTheRings Mordor]]. The oddest example are the Dúnedain Rangers founded by a mildly insane Tolkien fangirl who has a quasi-religious reverence for his books. There are also several "Indian" tribes many of whose members have, at best, only nominal amounts of First Nations ancestry and Norrheim, a Viking style nation founded by Asatru. The Republic of Boise claims to be the successor to the original United States but it's setup is much more like the Roman Republic, especially it's military. Meanwhile over in England "Mad King Charlie" tried to turn what remained of his nation into something of a vast Rennaisance Faire, although his subjects drew the line at Morris dancing.

[[folder:Film]]

[[/folder]]

* ''TabletopGame/Warhammer40000'': Post-Constantine Rome. Its better days are behind it, technological advancement has slowed to a crawl, and the Imperium is facing threats inside and out but perhaps [[spoiler:Roboute Guilliman's]] return may help. For more specific examples, feudal worlds or μ-class planets, as they are dependent on local agriculture and the most advance tech are black powder guns and cannons. These worlds make for little use or need but some are used to find new recruits for {{SpaceMarine}}s from the nobles and warriors and may also be a Knight World, having warrior-noble houses pilot [[MiniMecha Knights]] to defend their countries and fight for the Imperium of Man.

* ''Film/GuardiansOfTheGalaxy'', which creates what is, overall, a mid-'70s to very-early-'80s atmosphere through its choice of music tracks and its aesthetic cues for sci-fi.

* ''Manga/NausicaaOfTheValleyOfTheWind'' is a clear-cut example

A setting in which societies with futuristic technology have reverted to patterns from earlier time periods (e.g., medieval Europe, feudal Japan, the American Wild West) while remaining at a futuristic technological level (e.g., starships, HumongousMecha, {{Energy Weapon}}s). This can be either the result of relating historical metaphors to a future society, or an excuse to do a period piece [[RecycledINSPACE IN SPACE]].

# SpaceWestern: Society in the future will look like TheWildWest of 19th-century America, with brave pioneers leaving a civilized homeland to settle a dangerous and lawless frontier. You should expect to see [[{{BountyHunter}} Bounty Hunters]] and gangs of [[{{Outlaw}} Outlaws]]. If aliens are present, they will often be a FantasyCounterpartCulture for Native American tribes. The anime ''Anime/CowboyBebop'' and the live-action television series ''Series/{{Firefly}}'' are well-known examples of sci-fi with a setting inspired by the American Wild West.

Despite the title of this page, this trope has nothing to do with the 1967 [[Music/TheMoodyBlues Moody Blues]] album ''Music/DaysOfFuturePassed'' (the title of which refers to, well, the ''present'', specifically the course of a single day in a person's life). Nor with the ''Comicbook/XMen'' TimeTravel story arc ''ComicBook/DaysOfFuturePast'' (although in the original run of the X-Men story, some of the background details imply a degree of technological regression, such as horses pulling a bus, and that timeline had certainly regressed in terms of social equality into an extreme level of segregation and eugenics), or [[Film/XMenDaysofFuturePast the film adaptation of said comic that bears the same name]].

* ''LightNovel/TrinityBlood'' is a ''Renaissance Future'', with Vatican States = Italy, Methuselah Empire = Ottoman Empire, and Albion = England.

* ''Anime/{{Voltron}}[=/=] Anime/GoLion'' is a medieval fairy tale world InSpace.

* ''Literature/{{Safehold}}'' series has last humans settle on the eponymous planet without memories of their history and no space technology. Nine hundred years later world is close parallel of 15th-16th century world, with dominative Church of The God Awaiting (medieval catholicism InSpace). Charis takes place of Great Britain, Emerald is Ireland, Siddarmark is the young United States, Raven Lands are Germanies, Harchong mixes China with some Russian details and Desnair is Poland. Later it begins to emulate 30 Years War InSpace, although in more 18th -- early 19th century setting.

* ''Manga/OutlawStar'' may fall more on the sci-fi side of things (with some Daoism and [[ClarksThirdLaw sufficiently advanced]] shenanigans thrown in) than the above examples, but the gun-slinging is plentiful, and there're enough bounty hunters and duels at [[RecycledInSpace binary sunset]] to give its narrative the Western vibe its title does.

* ''Film/{{Outland}}'', which is basically ''Film/HighNoon'' [[InSpace IN SPACE!]]

* Creator/NealStephenson's ''Literature/TheDiamondAge'' takes place on a future earth where people have segregated themselves into several large "phyles," unified not by geography but by shared culture and beliefs. One of these phyles, New Atlantis, has based its laws and cultural practices on those of the American and English Victorian period, with the addition of [[ZeppelinsFromAnotherWorld zeppelins]]. The underlying idea is that nanotechnology has given everyone the tools to live more or less as they please, and broken the control of territorial governments over their citizens. So people wind up forming factions based on whatever culture they choose to live in. The neo-Victorians just happen to be the ones who adopt the main viewpoint character.

* One of the main tenets of the french right wing philosopher Guillaume Faye is that the future civilisation will have to be rebuild this way after a cataclysm.

* Queztalia in James Morrow's ''Wine of Violence'' is an [[MarySuetopia idealized take]] on the Meso-American Toltec civilization.