Undertale-au Stories

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67 Stories

  • Underleft by EMIKAXED
    EMIKAXED
    • WpView
      Reads 113
    • WpPart
      Parts 11
    What would happen if, after Clover's Vengeance Route, Frisk fell into the Underground one year later?
  • Notion!Tale by RandomOtaku478
    RandomOtaku478
    • WpView
      Reads 308
    • WpPart
      Parts 6
    What happens once a "Cluster" begins? Do all the AUs caught within it get destroyed? Does everyone die to inevitably become dust? Who knows, an event so rare has barely any records about it, let alone survivors. Follow a variety of characters and their experiences surviving in this new world, where each of their notions and ideas has become one.
  • Instagram D'un Dragon Bipolaire by Loxya-The-Dragon
    Loxya-The-Dragon
    • WpView
      Reads 4
    • WpPart
      Parts 1
    Hey ..... Bienvenue sur mon instagram ^^
  • Gap!Tale Comic by YukiKyuuAizawa
    YukiKyuuAizawa
    • WpView
      Reads 377
    • WpPart
      Parts 5
    Artist: Elizabeth Draws Writer: YukiKyuuAizawa The comic version of Gap!Tale. This is the story of Frisk who somehow manged to gain the ability to manipulate the boundaries. Because of that Frisk can travel the multiverse. This is a story of them doing just that. And because of that they do so, to relieve their perpetual boredom. But while they do so bits and pieces of their past start to surface.
  • FracturedTimeline by ThePacMario75
    ThePacMario75
    • WpView
      Reads 21
    • WpPart
      Parts 1
    What happens when during a Genocide Run in Undertale, the timeline gets corrupted..? Undertale by Toby Fox.
  • HaCkErTaLe Story (My AU) by thesharkboy1
    thesharkboy1
    • WpView
      Reads 1,287
    • WpPart
      Parts 9
    This Is my UT AU. Cover by Creator William. #1 undertale-au at one point Discord Server: https://discord.gg/9QgqUAe9pG
  • Hackedtale AU Guide by Scarlet_Streak
    Scarlet_Streak
    • WpView
      Reads 88
    • WpPart
      Parts 4
    This is the temporary location for the official Hackedtale guide! Feel free to ask any questions! The cover art is some stupid concept art of Hackedtale Flowey that I made. Some of the other art included is by @PaladinOfVoltron, which is why it looks so much better.
  • Polygon Universes : Switched Stories by Octavio-Nicolas
    Octavio-Nicolas
    • WpView
      Reads 66
    • WpPart
      Parts 4
    Undertale is a turn based RPG game where you can spare your ennemies, it is made by Toby fox. It became so popular that the community made alternate universes (AUs), where the characters change personality or roles, and alternate timelines (AT), where it's a universe where some events happened and the story changed. As an example for an AT we can take Horrortale, Horrortale is Undertale after a Neutral run, the main character left the monster in the underground and left, their sanity degraded and they became insane to the point of cannibalism. Well now, I'm doing an alternate timeline of an alternate universe known as StoryShift (you can check all the details on internet am not going to explain everything).
  • Aftersoul  by SonGoku0311
    SonGoku0311
    • WpView
      Reads 473
    • WpPart
      Parts 22
    I'd be super happy is someone actually drew some artwork based on this one day! I'd absolutely give a shoutout, but, uh, that probably won't do much
  • sans au seven minutes in heaven by underpup5607
    underpup5607
    • WpView
      Reads 366
    • WpPart
      Parts 3
    I'm gonna regret this... disclaimer: this is fluff, lemons, and small smut. dont like then I would advise you not to read.
  • Curiosity Killed the Cat {Undertale Au Fanfic} by Xx_Starboy_xX
    Xx_Starboy_xX
    • WpView
      Reads 110
    • WpPart
      Parts 2
    Curiosity is a rather...fragile... thing. It can fuel creativity and inspiration, yet it can also lead to harms way. After all, curiosity killed the cat, right? But when one being becomes let's say...too curious... with said curiosity being fueled by a rather twisted personality, what happens when this leads to a dangerous curiosity to which could impact the multiverse for who knows how long and for who knows what way? What if said curiosity leads to a form of...experimentation?... When combined with such a dangerous curiosity, what if a certain Guardian of Positivity is particularly desperate to get back someone he had lost? Desperate enough that he may be willing to try...anything? {Knowing my story writing tendencies, I'm just going to go ahead and put a possible trigger warning for Blood, Gore, Experimentation, Death, Swear Words, Depression, Manipulation, and Violence.}
  • Volatale Official by Null0w
    Null0w
    • WpView
      Reads 43
    • WpPart
      Parts 2
    An original Undertale Alternative Universe by yours truly.
  • Well That Was Unexpected... by Yuseabell
    Yuseabell
    • WpView
      Reads 70
    • WpPart
      Parts 3
    The Castle that laid home to Nightmare and his Gang has always been a mystery in itself, many assume that the Castle came into Nightmares possession after killing off the residence of an AU. Others say it was a leftover structure that survived the slaughter from Dreamtale. However the most interesting happenings would be how Nightmare and his gang behave behind its closed doors~ Who knows? We may encounter the unexpected here after all!
  • Undertale AU's are texting by GOOPY_DADSTER
    GOOPY_DADSTER
    • WpView
      Reads 715
    • WpPart
      Parts 7
    There will be a lot of texting between sanses. A lot of HUMEROUS stuff And sometimes, I'll write stuff like every other novel I won't name every character I'll use here (the description), I'll name the ones that'll be used in every chapter. By the way, none of these characters or arts are mine. Undertale belongs to Toby Fox Other characters in this story belong to their creator
  • Underbourg by Quantis1
    Quantis1
    • WpView
      Reads 44
    • WpPart
      Parts 3
    Sans only dreams of a calm and easy life. Not easy when you're the only private detective of an island with a lot of tension. When Ms. Toriel asks him to find one of the orphans she takes care of, it could seem like an easy job. But this human child seems to have been kidnapped... Could the mayor of the city really be the one behind this ? Sans will have to use all the energy he has to find that kid, solve the dangerous complots behind this, and maybe even stop a new war from happening... Undertale made by Toby Fox
  • (Reborn) Everything Sans X Union Academy  by fanson34
    fanson34
    • WpView
      Reads 723
    • WpPart
      Parts 2
    when stores are made with reborn, there are manly 2 ways it goes 1. it's silly goofy and unrealistic 2. it is really realistic and had a lot dark thems aling with people dying Now Tony finds himself in one of the most confusing worlds thats any sane person can find them selves on while being a skeleton of everything
  • Aboveswap by Nightingale-Song
    Nightingale-Song
    • WpView
      Reads 13
    • WpPart
      Parts 5
    (This story is base on Underswap so yes I kept the last part of the title just put Above since this is doing after the Pacific Route. It can contain spoils from the game too so BEWARE!!!) After Chara free the monsters from the Underground. (They had their issues with humans but they were finally free!) Things were going well for everyone well that is until Frisk decides to return and not after Chara but now wants Sans for some reason. What could that be? Also, Chara will finally realize the truth to Sans about the Reset and timelines of every route. Would Sans ever understand what Chara did or will he hate her for what she done? Read and Find Out! P.S. Yes I see both Chara and Frisk as female to make the story go much easier to understand!
  • Vessel of the Void (UNDERTALE AU) by hopelessrainbows
    hopelessrainbows
    • WpView
      Reads 38
    • WpPart
      Parts 3
    DISCLAIMERS: 1. I do not own Undertale or its characters. Props to Toby Fox and the Undertale team for gifting us the beauty of Undertale and the characters. This story also includes spoilers for all of UNDERTALE, so be aware of that. This story was really meant for AU fans who already have a deep understanding of both Gaster and Undertale. Without such details, it won't make much sense at all. 2. I will be using a few headcanons throughout the Undertale community for unexplained things about Gaster, souls, magic, RESETs, etc. After two Genocide routes, there is nothing new...except for the return of an old friend. The former royal scientst, Dr. W.D Gaster, takes control of this world by stealing the human's soul and body. He is now dedicated to finding his memories and becoming known once again. Perhaps he can even save monsterkind, just as he intended to do so long ago. (this isnt meant to be some amazing story, really. i'm just sillying. sorry if you want anything original)