In a series set AfterTheEnd, especially if it's [[AndManGrewProud so long After The End that the Golden Age is nothing but myth and legend]], one constant factor is that the GoldenAge and [[EndOfAnAge its end]] will be tied in with the plot somehow, whether this means LostTechnology for the heroes to use, or a BigBad who is a LivingRelic from those times and is plotting to bring them back [[UtopiaJustifiesTheMeans at any cost]]. However it's played, tantalizing details about that time will be revealed, and if they're interesting tidbits, they'll whet the readers' appetites for more. As a result, one of the most popular settings for a {{Prequel}} is ''during'' the lost golden age, before the [[WorldSundering world-shaking cataclysm]] that set up TheVerse that we know today.

Most of the time, the prequel will prominently feature said worldshaking cataclysm as its climax; indeed, it's almost mandatory, so that viewers can see how the wondrous world of the Golden Age [[EndOfAnAge became the world of the original series]]. Normally, the Golden Age will be (at least superficially) a {{Utopia}} filled with either ScienceFiction trappings or {{Magitek}}; CrystalSpiresAndTogas are often shown. It's very probable that the setting will be a CrapsaccharineWorld under the surface, in which case it's also a SoiledCityOnAHill. PrequelInTheLostAge ''can'' overlap with JustBeforeTheEnd, but this is actually somewhat uncommon; normally, everything seems to be going smoothly right until the lights go out.

'''Warning: [[LateArrivalSpoiler Late Arrival Spoilers]] will be unmarked.'''
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!!Examples:

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[[folder: Fan Fic ]]

* This is a common trope in ''Franchise/SailorMoon'' FanFic, exploring the original Silver Millenium and its downfall before the series started.
* Also common amongst ''VideoGame/{{Touhou}}'' fics, set before the establishment of the Hakurei Barrier. Since some characters are TimeAbyss, this is fairly easy. How the characters worn ElegantGothicLolita outfit during Heian era is never pointed out.
* ''[[http://mdc01957.deviantart.com/art/A-Forgotten-Anniversary-326612122 A Forgotten Anniversary]]'' is an ''Webcomic/AxisPowersHetalia'' fic, set in the (actual) historical past of the ''Fanfic/NineteenEightyThreeDoomsdayStories'' AU (namely TheSixties) and focusing on the wider backdrop of the UsefulNotes/ColdWar despite it being about Austria and Hungary. Although it's distant enough from [[WorldWarIII Doomsday]] to stand on its own.

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[[folder: Film ]]

* The ''StarWars'' prequels are set before and during the Clone Wars and the downfall of the Old Republic, and feature the Jedi Order as it was before the Purge. The time difference is much smaller than usual, but the trope still applies.
* ''Film/EscapeFromThePlanetOfTheApes'' film qualifies, at least from apes' point of view, as it's set before the fall of humans' long-forgotten civilization (i.e. ours).
** Ditto ''RiseOfThePlanetOfTheApes''.

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[[folder: Literature ]]

* The ''Literature/HeraldsOfValdemar'' universe includes the ''Mage Wars'' trilogy, the first book of which is set during the titular conflict and leads up to the [[WorldSundering Cataclysm]]. The other two books deal with the immediate aftermath and set up the state of the world to come in the main chronology, 3,000 years later.
* The ''CoreanChronicles'' have a prequel trilogy set in the time of the Duarchy, starring [[spoiler: the ancestors of Alucius and of the Protector's line.]]
* The ''StarWarsExpandedUniverse'' includes many novels and games set in the time of the Old Republic, usually thousands of years before the Battle of Yavin.
** Anything happening more than one thousand years before the movies (when the republic was re-formed, and the Sith were thought by everyone to have been wiped out), in particular. Before this time, the republic had a military and the Jedi were allowed to hold political offices, with a Jedi serving as Chancellor. This re-formation happened in part because the communications and travel infrastructure of the galaxy had been ruined by Sith warlords, and the Republic being on its last legs, before the Sith annihilated themselves. Besides the military being disbanded and the Sith in hiding, the difference between those eras and the films is one thousand years of corruption and decay. The lack of an enemy to fight caused several families that had served as officers for thousands of years to be disaffected (setting the stage for the empire), and dissent caused by the corruption caused the separatist crisis and TheCloneWars.
* ''When The Tripods Came'' is a prequel to ''Literature/TheTripods''.
* The ''Literature/TalesOfDunkAndEgg'' are an ongoing series of prequel novellas to ''ASongOfIceAndFire'' set about a hundred years or so before the start of that series, during the tail end of a prosperous period under the old regime. They are somewhat LighterAndSofter and generally end on at least a bittersweet note.
* In the {{Dragaera}} series, the Paarfi Romances are a [[LiteraryAgentHypothesis fictional in-universe]] series detailing what the in-universe author considers the "good old days", where nobles were brave and honorable and peasants knew their place. In contrast to the modern, FirstPersonSmartass style of the Vlad series in the "present", these are written in Antiquated Linguistics (although interestingly, they are written in-universe some time after Vlad).
* Creator/IsaacAsimov wrote the ''Galactic Empire'' novels, set within the First Galactic Empire prior to the collapse depicted in the {{Foundation}} trilogy, as a bridge between his ''Robot'' series and that trilogy.
* Creator/KatherineKurtz wrote the Camber trilogy and the Heirs of Camber trilogy to explain the state of affairs in Gwynedd during ''[[Literature/{{Deryni}} The Chronicles of the Deryni]]'' trilogy. Specifically, the Camber and Heirs of Camber books explain how a land that had humans and Deryni co-existing openly (including Healers as a regular feature of then practice of medicine) became a land where Deryni often had to conceal their abilities or face death.
* In the CoDominium series, ''Falkenburg's Legion'' is a prequel to ''TheMoteInGodsEye'' and ''King David's Spaceship''. Set during the [=CoDominium era=], it focuses on a mercenary band's attempt to stablize off planet colonies before World War III devastates Earth.
* The ''HorusHeresy'' novels are essentially the story of how ''TabletopGame/{{Warhammer 40000}}'' became such a CrapsackWorld.
* The Great Migration Duology books (''Crystal Soldier'' and ''Crystal Dragon'') in the Literature/LiadenUniverse.
* Creator/GregBear[='s=] ''Literature/TheForerunnerSaga'' is a trilogy of {{Halo}} novels set during the heyday of the Forerunners 100,000 years ago, when they were spread out throughout the Milky Way. All that's left of them now are various artifacts (and their AI caretakers) scattered throughout the galaxy, including a set of giant rings meant to wipe out all life in the galaxy.
* The ''MagicTheGathering'' novel series has ''The Thran'', a novel about the time before the five colours of magic were discovered. It contains the StartOfDarkness moments for some of the series villains as well as explaining where several of the PlotCoupons used in the other books originated.
* Some of the ''Literature/{{Dune}}'' prequel novels from Brian Herbert and Creator/KevinJAnderson cover the distant past where sentient machines ruled the universe. None of the novels cover (or even mention in any detail) the time period prior to the Time of the Titans... yet.
* ''Darkwing'' is a prequel to the ''Literature/{{Silverwing}}'' trilogy that takes place in the prehistoric era.
* The ''Franchise/{{Bioshock}}'' novel ''Rapture'' mixes this with a slide into JustBeforeTheEnd. It basically links all the backstory we know about the first two games together into a single novel.
* Most of ''Literature/WizardAndGlass'' is set JustBeforeTheEnd of the time of the Gunslingers and tells of a time when Gunslingers still kept peace in the world, time and space were still somewhat dependable, and there seemed to be hope that even though the world had already somewhat "moved on," things maybe could still get better.
* ''TheSilmarillion'' is this to ''TheLordOfTheRings''.
* TalesOfTheBranionRealm is largely this, since each book is set a century or more before the previous book. Book 3, in particular, sets up the familial conflicts in Book 2, as brothers and sisters in the former make way for third cousins in the latter. It also mentions, in passing, an event that will lead to the main conflict in Book 1.
* The second {{Dragonlance}} trilogy, ''Dragonlance Legends'' featured the Cataclysm, which occurred 300 years prior to the events of most of the other Dragonlance materials.
* Sadly, there will never be a true prequel to the ''WheelOfTime'' series, due to the death of Robert Jordan, but we do have a brief "flashback" due to a past-viewing device in the fourth book. There Rand has a series of visions that work their way back through the Breaking of the World, all the way to the end of the Age of Legends.

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[[folder: Live Action TV ]]

* ''Series/{{Caprica}}'' is this to ''Series/{{Battlestar Galactica|Reimagined}}''.

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[[folder: Multiple Media ]]

* ''Franchise/{{Bionicle}}'''s 2004 and 2005 sagas took place a thousand years before the current story. Allegedly, they planned to have more flashback years, but the kids buying the toys found them too confusing.

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[[folder: Tabletop Games ]]

* ''{{Exalted}}'''s ''Dreams of the First Age'' supplement is set in the eponymous First Age, a high-{{Magitek}} civilization ruled by the immensely powerful, and increasingly power-mad and deranged, elders of the Solar Deliberative. The supplement kicks off at the very moment that the Unconquered Sun turns his face from his Chosen.
** Exalted used to be itself a prequel to OldWorldOfDarkness, with various types of Exalts being derived from WoD splats - Lunars are obviously werewolves, for instance.
* ''{{Earthdawn}}'' is a prequel to ''TabletopGame/{{Shadowrun}}'', set in the Fourth World. Shadowrun itself is set in the Sixth World. (As a point of comparison, we're currently living in the Fifth World.)
** Not much longer, the clock is running.
* ''{{Rifts}} Chaos Earth'' is set during the Coming of the Rifts and the end of human dominion over the Earth. Ironically, due to the rarity of magic, the nonexistence of [[{{Magitek}} Techno-Wizardry]] and the fact that Chaos Earth hasn't been fighting a constant war for survival for centuries, the tech level is in many areas ''lower'' than that of the mainline Rifts Earth setting.
* The ''Arcane Age'' line of ForgottenRealms products explored the days when Netheril and Myth Drannor were at the height of their power.

[[/folder]]

[[folder: Video Games ]]

* Inverted in ''VideoGame/PhantasyStarII''; it's a ''sequel'' to [[VideoGame/PhantasyStarI the first game]], set a thousand years afterward in a world where technology has created a {{Utopia}} and its breakdown [[JustBeforeTheEnd is driving the Algo system off a cliff]]. On the other hand, it also has [[VideoGame/PhantasyStarIV a sequel of its own]] set after the destruction of Mother Brain.
* Sagi's headache induced "Elsewhere" scenes in ''BatenKaitos Origins'' takes place before the War of Gods. It only becomes clear at the 3rd occurrence, where the group notices the land goes on endlessly, in contrast to the Floating Continents the series uses.
* ''VideoGame/FinalFantasyXII'' and ''VideoGame/FinalFantasyTacticsA2'' stand as prequels to ''VideoGame/FinalFantasyTactics''. Probably.
** And all of them take place before the first ''FinalFantasyTacticsAdvance''. The setting's "Real World" is actually Ivalice thousands of years in the other games' future after all the world's magic energy is used up and people have developed technology analogous to RealLife. The in-universe ''Final Fantasy'' games the children play and on which [[spoiler:Marche's fantasy world is based]] are works of historical fiction, like the ''DynastyWarriors'' games are to us.
* ''VideoGame/WildArms4'' seems to be set during a period of time constantly alluded to in other games in the series of a massive world war where cyborgs and nanomachine monsters freely roamed the lands. Many of the world's bigger cities have been destroyed in the chaos and are slowly turning into the types of locations you see in games such as ''VideoGame/WildArms3''.
* Each and every one of ''Franchise/TheLegendOfZelda'' games take place in their own distinct era of Hyrule's history, but ''TheLegendOfZeldaSkywardSword'' is notable for being the earliest game in the timeline, before the founding of Hyrule itself, and when the Demon King Demise threatened to wipe out all life for the Demon tribe. [[spoiler:It also shows us the creation of the Master Sword and Demise's curse on Link and Zelda.]]
* VideoGame/TheElderScrollsOnline will be set in the Second Era in the Elder Scrolls franchise history, a good millenium or so before the VideoGame/TheElderScrollsVSkyrim, and even before the empire of Tiber Septim was established.
* The ''Franchise/StarWars'' ''VideoGame/KnightsOfTheOldRepublic'' games are set in the Old Republic-era, but unlike the prequels above, they take place nearly ''four thousand years'' into the past. The stories center mostly on the wars between the ancient Sith Empire and the Galactic Republic, the Mandalorians, and the Rakata precursors [[AbusivePrecursors who enslaved the galaxy several millennia ago.]]
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