History Doorstopper / FanWorks

* ''Fanfic/TheLoudHouseRevamped'', a ''WesternAnimation/TheLoudHouse'' MassiveMultiplayerCrossover fanfic, dethroned ''Fanfic/AmbienceAFleetSymphony'' to become not just Website/FanFictionDotNet's longest ongoing fanfiction, but the site's longest fanfic ever and the longest piece of literature ''in recorded history''. As of May 20, 2023, it sits at over 16 million words across 2,099 chapters. It's actually so long that ''it broke Fanfiction.net's word count''; meaning no one except the author knows what the actual word count is, as it can't display anything higher than 16,777,215 (the site uses 24-bit integers). For the curious: it's a self-insert fanfic wherein the protagonist joins with the Loud House to combat evil forces. Most of the text, however, is in script format and consists of one-liners and copy-pasted fan wiki entries.

* The ''Fanfic/{{Quiververse}}'', with twenty completed stories, totals 487,525 words. And it's due to grow, with six more stories in the first season alone and a second season of as-yet unannounced size to come in the future, as well as assorted bonus material.

* As of June 2023, ''Fanfic/EyesOnMe'' adds up to a total of 288,625 words spread out over nineteen entries.

* As of January 1, 2023, ''[[Fanfic/ReAssessments Re: Assessments]]'' ([[https://archiveofourown.org/works/34883659 link]]) is one of the longest ''VideoGame/{{Psychonauts}}'' fanfics hosted on Archive of our Own at 281,716 words spread out over 44 chapters.

* ''[[https://www.fanfiction.net/s/13023972/1/Order-of-the-Otter Order of the Otter]]'', a Harry Potter fanfic, is over 445,000 words long and it's still ongoing.

* As of May 2023, ''Fanfic/PokemonCrossing'' is over 305,000 words. Currently it's the third-longest VideoGame/AnimalCrossing fanfiction on [=AO3=]. Several side-installments brings the series to over 310K words.

* ''Fanfic/ThisBites'' is the longest ''Franchise/OnePiece'' fanfic out there with 1,885,579 words at 81 chapters (and a few specials) as of May 2021.

* ''Fanfic/AThingOfVikings'' is a ''Franchise/HowToTrainYourDragon'' AlternateHistory fanfiction, and with 1,090,823 words as of chapter 100 published on Sept 20, 2020, the fic is officially longer than the combined length of the seven main Harry Potter books (1,084,170); while the author has broken up the story arcs into "books", they are currently aggregated as single fanfiction and thus qualify under this category.

* As of May 2023, ''Fanfic/EyesOnMe'' adds up to a total of 281,295 words spread out over eighteen entries.

* As of April 2023, ''Fanfic/PokemonCrossing'' is over 303,000 words. Currently its the third-longest VideoGame/AnimalCrossing fanfiction on [=AO3=]. Several side-installments brings the series to 310K words.

* ''Fanfic/TheLoudHouseRevamped'', a ''WesternAnimation/TheLoudHouse'' MassiveMultiplayerCrossover fanfic, dethroned ''Fanfic/AmbienceAFleetSymphony'' to become not just Website/FanFictionDotNet's longest ongoing fanfiction, but the site's longest fanfic ever and the longest piece of literature ''in recorded history''. As of April 10, 2023, it sits at over 16 million words across 2,060 chapters. It's actually so long that ''it broke Fanfiction.net's word count''; meaning no one except the author knows what the actual word count is, as it can't display anything higher than 16,777,215 (the site uses 24-bit integers). For the curious: it's a self-insert fanfic wherein the protagonist joins with the Loud House to combat evil forces. Most of the text, however, is in script format and consists of one-liners and copy-pasted fan wiki entries.

* ''Fanfic/ACertainUnknownLevel0'' has reached 3,313,215 words as of March 2023, and is by far the longest ''LightNovel/ACertainMagicalIndex'' fanfiction on fanfiction.net. Spread over 176 chapters, it boasts an average count of more than 18,000 words per chapter.

* ''Fanfic/GodSlayingBladeWorks''-- A ''VisualNovel/FateStayNight''[=/=]''LightNovel/{{Campione}}'' crossover written by Marcus Galen Sands, where Shirou and Illya survive the Normal ending of The Heaven's Feel route via Dimension hopping and God magic.

* Just the main volume of the ''LightNovel/Overlord2012'' fanfic ''[[https://www.fanfiction.net/s/13152722/1/God-Rising-The-Cult-of-Ainz God Rising: The Cult of Ainz]]'' is 1,046,613 words long. Add in the expanded universe of spinoffs, sequels, and supplementary material (several of which are ongoing, and with more planned), and there's another nearly 800,000 words to read in order to get the whole story.

* ''[[https://www.fanfiction.net/s/12154466/1/Overlordly-broken Overlordly broken]]'', the longest ''LightNovel/{{Overlord}}'' fanfiction yet, has finished at 379,993 words and only 24 chapters, and is currently undergoing a rewrite which already has 115,304 words at 9 chapters.

* ''Fanfic/BloodThatFlows'' is, without a question, the longest ''Franchise/LyricalNanoha'' fanfic on Fanfiction.net. Over 300 chapters alone and over 830,000 words. The only ''Nanoha'' fanfic that comes close is the ''Fanfic/DevaSeries'', where, if you add up all four parts, there are more words than ''Blood That Flows'', but it still has less chapters. Of course, the latter is a pure ''Nanoha'' AlternateUniverseFic, while the former is a crossover with ''LightNovel/{{Slayers}}'' that pulls plotlines from both series.

* As of May 2023, ''Fanfic/EyesOnMe'' adds up to a total of 280,075 words spread out over seventeen entries.

* As of April 2023, ''[[Fanfic/FutureShockCameron Future Shock - Cameron]]'' ([[https://archiveofourown.org/works/15287826 link]]), a ''Series/TerminatorTheSarahConnorChronicles'' fanfic, clocks in at 6,861,092 words spread out over 1,523 chapters. It is the longest fanfic hosted on Archive of Our Own.

* As of January 2nd, 2023, ''[[Fanfic/TheShiningEyesFearOfAHerobrinePart2 The Shining Eyes (Fear of a Herobrine part 2)]]'' ([[https://archiveofourown.org/works/17046851 link]]) is the fifth longest fanfic hosted on Archive of Our Own, clocking in at 4,379,531 words spread out over 764 chapters.

* ''Fanfic/OfKeysAndHammers'' ([[https://m.fanfiction.net/s/13658054/1/ link]]) is a ''Franchise/KingdomHearts'' and ''TabletopGame/{{Warhammer}}'' crossover that's currently over 2476000 words and ''still'' updating.

* ''Fanfic/LatiasJourney'', weights in at 1,237,300 words. Combining it with its sequel ''Fanfic/BraveNewWorld'', already mentioned above, results in a length of over 3.5 million words.

* The 10 core stories of [[http://www.fimfiction.net/user/48437/BlackRoseRaven BlackRoseRaven's]] fusion of ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' and Myth/NorseMythology referred to as the ''Fanfic/BloomingMoonChronicles'' or the ''99 Worlds Saga'' total ''4,441,432 words''. That doesn't even count the various sequels or side stories (most of the author's other entries tie in to TheVerse).
* The ''Fanfic/{{Austraeoh}}'' series. While each story has 200 chapters, they are very short, usually no more than one or two thousand words. Still, as of July 2017, the entire nonalogy clocks in at above 3,300,000 words so far, and the author is planning on several more parts.

* The ''Ben 10 RWBY'' series is perhaps one of the longest {{Crossover}} [[FusionFic Fusion fics]] in both sections. The first volume, ''[[https://www.fanfiction.net/s/13050256/1/Ben-10-RWBY-Volume-1-Dimension-Twist Dimension Twist]]'', clocks in at 1,680,368 words, and the ongoing (as of April 15, 2023) second volume, ''[[https://www.fanfiction.net/s/13854784/1/Ben-10-RWBY-Volume-2-Ultimate-Omniverse Ultimate Omniverse]]'' is at 861, 866 words. It's one of the longest ''Ben 10'' and ''RWBY'' crossovers, but it then wedges in a third franchise into the mix midway with [[spoiler: ''WesternAnimation/GeneratorRex'']].

* ''Fanfic/HarryPotterAndTheMotherWhoLived'' is over 670,000 words long and as of March 2023 still ongoing.

* As of this writing, the ''Fanfic/AManOfIron'' series consists of three books (with more planned) and is nearly 540,000 words long.

* ''Fanfic/TheAccidentalAnimagus'' is by itself 697,191 words. It's sequel, ''Animagus at War'', is still being updated and currently sits at 208,940 words as of March 2023. Add in the extra oneshots (which combined are at 26,933 words) and you have a series of 933,064 words!

* As of April 15, 2023, the ''Fanfic/StevenUniverseBornEarlierAU'' series ([[https://archiveofourown.org/series/2348236 link]]) clocks in at 526,538 words spread out over 89 works.

* The ''WesternAnimation/FamilyGuy'' fanfic ''Fanfic/TheSpellbook'' is over 284,000 words long, and is one of the longest ''Family Guy'' fanfics.

* ''Fanfic/FalloutGirls'', a crossover between ''WesternAnimation/MyLittlePonyEquestriaGirls'' and ''VideoGame/Fallout3'', ongoing at just over 400,000 words as of January 2021.

* At over 570k words, ''Fanfic/SpellboundLilafly'' is the second-longest ''WesternAnimation/MiraculousLadybug'' fanfic on Website/ArchiveOfOurOwn as of July 2022.

* As of January 1, 2023, ''[[Fanfic/ReAssessments Re: Assessments]]'' ([[https://archiveofourown.org/works/34883659 link]]) is one of the longest ''VideoGame/{{Psychonauts}}'' fanfics hosted on Archive of our Own at 268,704 words spread out over forty-two chapters.
* As of March 28th, 2023, ''Fanfic/EyesOnMe'' adds up to a total of 262,503 words spread out over sixteen entries.

* ''[[https://www.fanfiction.net/s/13225250/1/Three-Strikes Three Strikes]]'', a ''WesternAnimation/{{Zootopia}}'' fanfic, is over 322,000 words long and as of March 2023 still ongoing.
* ''[[https://archiveofourown.org/works/24381499/chapters/58807216 The Hunter From America]]'', a ''Manga/DemonSlayerKimetsuNoYaiba'' fanfic, is at 375,000 words as of April 2023.

* As of December 25th, 2022, there is a ''VideoGame/ResidentEvilVillage'' fanfic known as ''[[https://archiveofourown.org/works/31173221 She Who Waits In The Dark]]'' that sits at 321,362 words spread out over 22 chapters. The series isn't done yet and likely won't be for several chapters.
* As of January 2nd, 2023, the ''VideoGame/{{Psychonauts}}'' ForWantOfANail fanfic ''Fanfic/LaterTraitor'' clocks in at 191,220 words spread out over thirty-nine chapters.

* ''[[https://www.fanfiction.net/s/3703685/1/Family Family]]'' by The Middle Warner Sibling, an ''WesternAnimation/{{Animaniacs}}'' fanfiction following the lives of the Warner Siblings within an AnimatedActor universe, has a completed total of 763,370 words. However, if taking into account the side-story ''[[https://www.fanfiction.net/s/4638224/1/Friends Friends]]'', which contains some particularly imperative plot points in the context of ''Family'', the two add up a total of 966,373 words for the universe as a whole.

* ''Fanfic/{{Traveler}}'': A Pokémon fanfic with just over 1.2 million words with 50 chapters as of February 2020.

* ''Fanfic/TheNewAdventuresOfInvaderZim'' is a multi-volume SeriesFic, of which Season 1 clocks out at nearly 233,000 words, while the currently ongoing Season 2 is already over 144,000 words, bringing the series to over 377,000.

* As of April 15, 2023, the ''Fanfic/StevenUniverseBornEarlierAU'' ([[https://archiveofourown.org/series/2348236 link]]) clocks in at 526,538 words spread out over 89 works.

* As of December 14th, 2022, the ''Fanfic/OhRhonda'' trilogy has amassed a total of 820,742 words.

* ''Fanfic/TheLoudHouseRevamped'', a ''WesternAnimation/TheLoudHouse'' MassiveMultiplayerCrossover fanfic, dethroned ''Fanfic/AmbienceAFleetSymphony'' to become not just Website/FanFictionDotNet's longest ongoing fanfiction, but the site's longest fanfic ever and the longest piece of literature ''in recorded history''. As of March 20, 2023, it sits at over 16 million words across 2,042 chapters. It's actually so long that ''it broke Fanfiction.net's word count''; meaning no one except the author knows what the actual word count is, as it can't display anything higher than 16,777,215 (the site uses 24-bit integers). For the curious: it's a self-insert fanfic wherein the protagonist joins with the Loud House to combat evil forces. Most of the text, however, is in script format and consists of one-liners and copy-pasted fan wiki entries.

* As of 25 December 2022, ''[[Fanfic/FutureShockCameron Future Shock - Cameron]]'' ([[https://archiveofourown.org/works/15287826 link]]), a ''Series/TerminatorTheSarahConnorChronicles'' fanfic, clocks in at 6,728,224 words spread out over 1,511 chapters. It is the longest fanfic hosted on Archive of Our Own.
* As of December 25th, 2022, ''Fanfic/AtTheEdgeOfLasglen'', a ''Franchise/TolkiensLegendarium'' fanfic, clocks in at 6,019,151 words spread out over 331 chapters and is the second longest fanfic hosted on Archive of Our Own. It helps that it's written by a couple of authors rather than just one.

* ''Fanfic/EquestriaGirlsFriendshipSouls'': A FusionFic between ''Manga/{{Bleach}}'' and ''WesternAnimation/MyLittlePonyEquestriaGirls''. After six years it counts 2,010,003 words (2,151,821 with a finished crossover story) and keeps being updated regularly every 2-3 weeks.

** Chapters in recent arcs rarely contain fewer than 20,000 words, which is down in part to the author writing responses to all those who leave comments (some of them ''very'' detailed).

* ''Fanfic/AThirdPathToTheFuture'' ([[https://www.fanfiction.net/s/9443327/1/ link]]) a ''Harry Potter'' and ''Marvel'' crossover that clocks in at 2,086,111 words as of March 2022. It's updated regularly, still shows no sign of slowing down, and maintains a high quality.

* ''Fanfic/OfKeysAndHammers'' ([[https://m.fanfiction.net/s/13658054/1/ link]]) is a ''Franchise/KingdomHearts'' and ''TabletopGame/{{Warhammer}}'' crossover that's currently over 2026000 words and ''still'' updating.

* At over 1,080,000 and still ongoing as of 2015 ''Fanfic/{{Drifting}}'' is currently the second longest ''Manga/{{Naruto}}'' story on Website/FanFictionDotNet.

* As of May, 2018 ''Fanfic/{{Eroninja}}'' clocks in at 90 chapters and slightly over 1,950,000 words. The side-story ''[[http://ficwad.com/story/214155 Eroninja: The Limelight]]'' adds over another 100,000. Both stories are still going strong and the author intends to write at least two sequels.

* ''Fanfic/AshesOfThePast'', a ''Anime/PokemonTheSeries'' fanfiction, clocks in at 1,869,563 words and still ongoing as of January 2019.

* ''[[Fanfic/HPAndTheJadeDragon HP & the Jade Dragon]]'' ([[https://www.fanfiction.net/s/12046790/1/HP-The-Jade-Dragon link]]) as of September 2017 has 98 chapters and over 1,069,000 words.

* ''[[https://archiveofourown.org/works/13084488 Hotel for the Broken]]'' as of November 2018 is an A/B/O ''Manga/{{Haikyuu}}'' fanfiction with over 1,2 million words, making it the longest ''Haikyuu'' fanfiction on Archive of our Own

* ''Fanfic/{{Traveler}}'' is a ''Pokémon'' AlternateUniverseFic and PatchworkFic where Ash receives a male Nidoran instead of a Pikachu. As of March 2019, it has over 40 chapters and is over a million words long.

* The ''Anime/CodeGeass'' fanfic ''Fanfic/DauntlessAlloraGale''. It started in July 2010; by January 2012, it was at over 539,000 words in 77 chapters, and usually updated at an average of once every 8-10 days. The author believed that she ''might'' finish sometime in 2012. She didn't, and it's still ongoing. As of December 2014 it is 97 chapters long and over 660,000 words.
* ''Fanfic/ThisPlatinumCrown'' is 847,983 words as of April 2016 and still not finished, though unfortunately, it appears to be [[DeadFic dead]]. Add to that that's it's a sequel to ''Fanfic/TheBestNightEver'', which is comparatively short at 53,935 words.

* [=ScytheRider's=] ''Fanfic/PokemonMysteryDungeonSilverResistance'' weighing in at 728,981 words (as of November 2016).

* As of October 2017 ''[[https://www.fanfiction.net/s/12104688/1/Whispers-in-the-Night Whispers in the Night]]'' has over 669,000 words and 52 chapters.

* ''[[https://www.fanfiction.net/s/9709189/1/Damaged-Defenders Damaged Defenders]]'' as of September 2017 is over 327,000 words and 129 chapters.

* ''Fanfic/UnbreakableRedSilkenThread'': As of April 6th 2020, the story is on its twenty-eighth chapter and 363,109 words long. According to the author, the story may in fact become the longest ''Total Drama'' fanfiction on Fanfiction.net.

* ''Fanfic/RemnantInferisDOOM'' sits at 29 chapters and almost 290,000 words and is still ongoing.

* ''[[https://www.fanfiction.net/s/8149841/1/Again-and-Again Again and Again]]'', a GroundhogPeggySue fic with Literature/HarryPotter, is over 324,000 words long and it's still ongoing.

* ''Fanfic/TheElementsOfFriendship'' is an AU of ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' that expands on canon in an epic fashion, and is over 400,000 words long.

* ''Fanfic/FreakinGensokyo'' is a ''Franchise/TouhouProject'' fanfic, which, as of 2 June 2021, has 154 chapters consisting of ''2,508,811'' words. It's way more than the author expected, as he wanted to end the fanfic at either 1,000,000 words mark or 100 chapters. It is the longest Franchise/TouhouProject fanfic on Website/FanFictionDotNet.

* ''Fanfic/BraveNewWorld'' currently stands at 2,404,050 words.
* ''Fanfic/SenranPersonaNinjasOfHearts'', which reaches 2,112,720 words, is, so far, the longest ''Franchise/{{Persona}}'' and ''VideoGame/SenranKagura'' crossover as of November 27th, 2022 (and perhaps the longest ''Senran Kagura'' story), and is still ongoing.
* ''Fanfic/DiariesOfAMadman'', which as of April 2019, is over 2.732 million words, holding the title of the longest fic on [=FIMFiction=], with no sign of slowing down anytime soon.
* ''Fanfic/ACertainUnknownLevel0'' has reached 3,042,225 words as of 10 September 2021, and is by far the longest ''LightNovel/ACertainMagicalIndex'' fanfiction on fanfiction.net. Spread over 166 chapters, it boasts an average count of more than 18,000 words per chapter.
** Chapters in recent arcs rarely contain fewer than 20,000 words (and more than 30,000 on occasion), which is down in part to the author writing responses to all those who leave comments (some of them ''very'' detailed).

* The 10 core stories of [[http://www.fimfiction.net/index.php?view=category&user=48437 BlackRoseRaven's]] fusion of ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' and Myth/NorseMythology referred to as the ''Fanfic/BloomingMoonChronicles'' or the ''99 Worlds Saga'' total ''4,441,432 words''. That doesn't even count the various sequels or side stories (most of the author's other entries tie in to TheVerse).

* ''Fanfic/AHollowInEquestria'' at last count is 1,082,491 words long, and is showing no signs of stopping. The author has indicated an intent to continue writing the story until it eclispses ''Fanfic/DiariesOfAMadman'' in length.

* ''Fanfic/TaylorVarga'', a crossover between ''Literature/{{Worm}}'' and an obscure anime ''Luna Varga'' clocks in at 1.8 million words, and is still going strong as of January 2020.
* ''[[https://www.fanfiction.net/s/9532463 Sonic's Ultimate Harem]]'', one of the most controversial pieces of Sonic fanfiction, chimes in at 1.6 million words by its completion. It's a MassiveMultiplayerCrossover between 107 different franchises with Sonic having sex with 360 women.

* ''Fanfic/ImperfectMetamorphosis'' is a Franchise/TouhouProject dark fic, which, as of 2 June 2021, has ''1,309,436'' words. It is the second longest Franchise/TouhouProject fanfic on Website/FanFictionDotNet, as well as one of the most well known fanfics in the Franchise/TouhouProject's western community.

* ''Fanfic/UnequallyRationalAndEmotional'' certainly isn't short in the ''[[Manga/NegimaMagisterNegiMagi Negima]]'' section, at 1,221,218 words as of chapter 48.
* ''Fanfic/MushroomWars'' reached the 1 million word milestone on April 6, 2022 at it's 121st chapter. It is the longest standalone ''Franchise/SuperMarioBros'' fanfic on Fanfiction.net, clocking in at 1,126,339 words as of January 30, 2023.

* ''[[https://www.fanfiction.net/s/8898479/1/Uchiha-Heiress-Remix Uchiha Heiress Remix]]'' has a little over 1.3 million words as of May 7, 2020.

* As of September 24, 2022, ''Fanfic/TheWeaverOption'' clocks in at 1,494,316 words of, regularly updated, story content.

* The ''Fanfic/DuskSeries'', finished in 2023, is over 1,500,000 words in seven books.

* ''[[https://www.fanfiction.net/s/7422125/1/Nightfall Nightfall]],'' a ''Naruto'' fanfic about Naruto gaining the Rinnegan is over 700,000 words, 146 chapters, and still going strong.

* ''Fanfic/BestKeptSecret'' is an on-going (as of May 2018) ''Franchise/FullmetalAlchemist'' fic that's over 500k words.

* ''[[https://www.fanfiction.net/s/4506329/1/The-Shy-Newcomer The Shy Newcomer]]'' is a ''Harvest Moon: More Friends of Mineral Town'' fic that began in 2008. As of March 2020, it is 530k+ words long.

* The ''Franchise/HarryPotter'' fanfic ''Fanfic/NewBloodArtemisgirl'' has been reliably updated with a new chapter every Tuesday and Friday since it was first published in August 2018. While each chapter is a single scene, about as short as a chapter can get and still meaningfully ''be'' a chapter, this still adds up to over 600k words as of March 2021.

* As of March 14th, 2022, the ''WesternAnimation/SouthPark'' [[MisterSeahorse Omegaverse]] fanfic ''[[https://archiveofourown.org/works/23221027 Rise]]'' clocks in at 613,046 words spread out over fifty-two chapters. This makes it one of the longest, if not ''the'' longest, ''WesternAnimation/SouthPark'' fanfics hosted on Archive of our Own.

* ''Fanfic/TheAccidentalAnimagus'' is by itself 697,191 words. It's sequel, ''Animagus at War'', is still being updated and currently sits at 202,482 words as of December 2021. Add in the extra oneshots (which combined are at 26,933 words) and you have a series of 926,606 words!
* ''Fanfic/TheVictorsProject'' is by itself over 300,000 words. Combine that with the other long-form works in the same 'verse, namely ''The Lumberjack and the Tree Elf'', ''Fall Into the River'', and ''The Bonds of Blood'' as well as the three shorter fics, and you have a series just over 650,000 words.
* ''Fanfic/TheSameMoonShines'' series has close to 800,000 words.

* ''[[http://www.fimfiction.net/story/19247/green Green]]'' is an exceptionally long fic focusing on a romance between Rarity and Fluttershy, among other pairings, finished at 475,032 words in 2017.

* ''[[http://www.fimfiction.net/story/78420/reharmony Re:Harmony]]'' is an AlternateUniverseFic of ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' that, as of April 2016, has run over 400,000 words without finishing.

* ''Fanfic/AnAuntsLove'' is over 370,000 words.

* ''Fanfic/AdventuresOfASuperFamily'', As of February 2022, has 369,569 words spread over ninety-four chapters.
* ''Fanfic/AndSoWeFight'' is just under 320,000 words long.

* The ''Franchise/HarryPotter'' fic ''Fanfic/DaphneGreengrassAndTheBoyWhoLived'' is at over 465,000 words.

* ''Fanfic/TheBridge'', a crossover between ''Franchise/{{Godzilla}}'' and ''WesternAnimation/MyLittlePonyFriendshipIsMagic'', is over 1.1 million words as of October 2022. Furthermore there are a few stories also set in the same universe.

* ''Fanfic/AThingOfVikings'' is a ''WesternAnimation/HowToTrainYourDragon'' AlternateHistory fanfiction, and with 1,090,823 words as of chapter 100 published on Sept 20, 2020, the fic is officially longer than the combined length of the seven main Harry Potter books (1,084,170); while the author has broken up the story arcs into "books", they are currently aggregated as single fanfiction and thus qualify under this category.

* The ''WesternAnimation/KungFuPanda'' fanfic ''Fanfic/ADifferentLesson''. As originally posted, over 1100 pages; a smaller font sized version runs around 550 pages. 45 chapters, 632,000 words. And amazingly, very little of it is filler; there's just that much going on.

* ''Fanfic/{{Hitchups}}'' is 40 chapters long, with 307,928 words that make up the entirety of the fic. For some time it was the second-longest ''WesternAnimation/HowToTrainYourDragon'' story on ff.net after ''The Truth is a Shard of Ice'' by [=Whitefang333=], though it's since been surpassed by other stories.

* A fanfiction based on ''WesternAnimation/Frozen2013'' called ''[[http://www.fanfiction.net/s/10142141/1/Elsa-s-Year Elsa's Year]]'', as of December 2014, is already over 300,000 words long - and still ongoing (though on hiatus).
* The ''WesternAnimation/Frozen2013'' fanfic, ''Fanfic/FrozenWight'' is 82 chapters and over 310,000 words long. ''And'' it has sequel fics, albeit ones much shorter in length than the original fic.

* What many consider one of the best ''Franchise/SuperMarioBros''/''VideoGame/SonicTheHedgehog'' crossover fanfics, ''Fanfic/MarioAndSonicHeroesUnite'', is now complete after several years in the making. Its final stats are 371,110 words and exactly 100 chapters spawning three sagas. Sure, not quite as extensive as some other examples, but still impressive.

* ''Fanfic/TeachingDarkness: Memories'' by RaeLogan, is over 206,000 words, and itself is PART 5 in a series, with the previous story at only a little over 52,000 (at least a quarter of its sequel's size!) and the currently in progress part 6 at over 137,000 as of January 27th, 2012. The fanfic series itself has sidestories (for ideas decidedly too short compared to the main stories to focus a multichapter story around, regarded as a different canon, except maybe the ''Twilight Zone''-esque one), about seven posted scrapped unfinished stories (released as Deleted Scenes), and several fan written stories, which, if compiled into one volume would be considered a Doorstopper. Sometimes jokingly referred to [[OverlyNarrowSuperlative THE Largest Fanfic Series Centered Around A Scrapped Character In A Game That Never Happened]]. Who? Mephiles the Dark from [[VideoGame/SonicTheHedgehog2006 Sonic Next Gen]]... VERY loosely.

* The ongoing ''Fanfic/WithPearlAndRubyGlowing'' series has several parts and intermissions that add up to 1,515,820 words as of November 2022.

* As of February 2023, ''Fanfic/PokemonCrossing'' is over 303,000 words and still ongoing. Currently its the third-longest VideoGame/AnimalCrossing fanfiction on [=AO3=]. Several side-installments brings the series to 310K words.

* As of April 28, 2020, ''Fanfic/PokemonResetBloodlines'' stands at 689,716 words, and it's only reaching the conclusion of the Kanto arc (with the Indigo League). And that's just the main story; [[ExpandedUniverse the numerous spinoffs and tie-in oneshots set in the same continuity]] add up even more for a total of 1,649,074 words (according to the ''Website/ArchiveOfOurOwn'' stats), and over 6002 pages according to the ''[[https://www.royalroad.com/ Royal Road]]'' stats.

* As of March 1st, 2023, ''Fanfic/EyesOnMe'' adds up to a total of 257,211 words spread out over fifteen entries.