A PeriodFic usually takes the characters of any fandom and places them in a different time period than the setting of the story. It may involve time travel, but most of the time it doesn't.

May or may not include the UsedFuture.

[[IThoughtItMeant Not about]] [[AvertedTrope averting]] NoPeriodsPeriod. Though we'll probably need a trope for that someday. Also not a fanfic about the full stop.

Compare {{Elseworld}} and SettingUpdate, although most of these are Setting ''Down''dates.
* ''[[http://www.fanfiction.net/s/67364/1/Rendezvous_with_Fate_An_Alternate_Universe_Fanfic Rendezvous With Fate]]'' by [=iCe=] relocates ''Manga/RanmaOneHalf'' to feudal Japan, and casts Akane as the time-traveling widow of Ryouga, who has accidentally come back in time and possessed the body of Ranma's estranged wife, Kodachi.
* ''[[http://www.fanfiction.net/s/2531597/1/Golden_Day Golden Day]]'' by Gondolier moves the plot of ''Literature/ThePhantomOfTheOpera'' to Hollywood in the Roaring Twenties -- with good period research, no less.
* There was once a sudden explosion of Cartman/Kyle ''WesternAnimation/SouthPark'' fics set in UsefulNotes/NaziGermany, with Kyle in a concentration camp, hiding in Stan's family's attic, or otherwise persecuted, and Cartman as a sadistic Hitler Youth.
* ''Scion: The Last Aeromancer'' is a story on Website/FanFictionDotNet which turns ''WesternAnimation/AvatarTheLastAirbender'' into a Western fantasy while keeping the plot mostly intact. However, the author hasn't updated for a very long time, so it's sadly a DeadFic.
* ''[[http://www.fanfiction.net/s/6102321/1/NGE_A_Century_Apart NGE: A Century Apart]]'' asks the question, "What would happen if ''Anime/NeonGenesisEvangelion'' took place 100 years earlier than it did in canon?"
* ''[[http://web.archive.org/web/19991006034910/http://solo.abac.com/moonromance/o/matmon.htm Matrose Mond]]'' by David H. Olivier sets the action of ''Anime/SailorMoon'' in UsefulNotes/NaziGermany.
* The ''Series/DoctorWho'' fanfic collection ''[[http://www.whofic.com/series.php?seriesid=2676 Really Stretching UNIT Dating]]'' has stories placing the Brigadier and UNIT in the 1790s, 1920s, 2020s, Ancient Greece and 12th century.
* In universe, TabletopGame/TwilightSparklesSecretShipficFolder has "Hearthswarming: A Detailed Account".
* Fanfic/Batman1939 explores Batman's fight to clean up Gotham during WorldWarII. While Batman himself ''was'' around in 1939, the fic includes characters and concepts that were not part of the Batman mythos in UsefulNotes/TheGoldenAgeOfComicBooks.