Undertale Stories

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1.2K Stories

  • Given An Unwanted Second Chance by UndertaleFanatic981
    UndertaleFanatic981
    • WpView
      Reads 67,486
    • WpPart
      Parts 62
    (TW: unaliving thoughts and memories at the beginning. It gets better over time, don't worry! Trauma is difficult to overcome...) You didn't want a second chance. You didn't want to survive. You wanted the sweet release of death. But it seemed like the universe was far too cruel to allow you even that. It took away your memories, your free will to choose whether you live or die...hell, it took the one thing in life you owned! Your own name! And now it seemed like you had to live yet another cruel life, doing things you never wanted done to others. But...at least you could do things your way. Maybe this second chance wouldn't be so bad... (Reincarnated as Nightmare Sans, but unlike other stories, you have no clue what Undertale even is) (WE REACHED NUMBER 1 IN THE UNDERTALE TAG YOOOOOOOO) (9/13/25)
  • Reincarnated as a Voice by IHamTiredAndBored
    IHamTiredAndBored
    • WpView
      Reads 507,490
    • WpPart
      Parts 49
    TW: Swearing and slight gore Y/N reincarnates in the anti-void as a Voice... Will he befriend error or will they make them hate their guts? And will they meet other people? Only time will tell. Hello, this is going to be my first book and idk if it's going to be good so meh :v This story was inspired by transported as a voice by Virus_bOi, I obviously do not own undertale and I don't keep up that much with the fandom, so some personalities might be different, but hey. I can just say that it's a different multiverse ¦ ] The cover image is from Shira Wolfiecute on tumblr
  • Tainted Ink [Undertale MV story] by DeadEnDead
    DeadEnDead
    • WpView
      Reads 1,599
    • WpPart
      Parts 12
    Pastel, a gentle Ink variant who was possessed for centuries, finally manages to regain control. But their magic is still tainted, and the multiverse isn't as safe as it once was. They'll need help from Blue and Dream to adjust.
  • Meme Book - Pictures and Comics by IrainandthunderI
    IrainandthunderI
    • WpView
      Reads 23,994
    • WpPart
      Parts 96
    I have too many memes so here
  • A Hermit Monster In Mewni by Itsvnzla2
    Itsvnzla2
    • WpView
      Reads 3,389
    • WpPart
      Parts 27
    After falling in battle against Chara and losing everyone in the Underground, Sans awakens in Mewni, a strange world ruled by ancient magic and wild creatures. For three weeks he survives alone in a cave as a hermit until witnessing an important event: the birth of the kingdom of Mewni, where Glossarick grants the first magic wand to the settlers, beginning the history of the kingdom
  • Touhou Kyoukaigai ~ Slothfully Displaced Skeleton by arearearearea
    arearearearea
    • WpView
      Reads 669
    • WpPart
      Parts 7
    Mystia was working overnight again in her food stall, and just when she was about to close, she meets an odd looking skeleton who asked for mustard! Sans the skeleton reveals himself as an unfortunate, albeit unique outsider, and becomes quite the unique background character! Maybe this leads to a bunch of incidents? Or maybe just a chill slice of life? ...Maybe. --- AN: An Undertale X Touhou Project crossover fanfiction stupid thing i thought up on the spot. particularly because i wanted to just meme out kaguya somehow. this would be more slice of life focused. there wont be too much action here, or important plot scenes to consider. Make sure yall get this higher than my cote and frieren slop!! This is actually VERY good in comparison to those two!! --- Thumbnail Art by Narisukusa! Subscribe to his youtube channel!
  • 𝐃𝐄𝐀𝐃 𝐓𝐎 𝐌𝐄   kris deltarune  by webkas
    webkas
    • WpView
      Reads 7,315
    • WpPart
      Parts 10
    ❛ why cant you see ur dead to me ❜ ᵈᵉˡᵗᵃʳᵘⁿᵉ ᵏʳⁱˢ ˣ ʳᵉᵃᵈᵉʳ
  • Undertale: Becoming Dust by Dedicated2Sleeping
    Dedicated2Sleeping
    • WpView
      Reads 6,274
    • WpPart
      Parts 16
    Have you ever thought about what it would be like to be.. Sans? Be Papyrus' lazy and playful brother? Be a comedian with endless jokes? Be the mysterious judge? Be well-liked? You envy him. You wanted to be him. Yet nothing could've prepared you for what's coming. . . . (WARNING, THIS IS A MIX OF CANON AND FANON FACTS. THERE MIGHT BE THINGS YOU DONT LIKE BUT JUST BE THE BIGGER PERSON AND TOLERATE IT. THIS IS NOT MEANT TO BE TAKEN TOO SERIOUSLY AND IS INTENDED ONLY FOR ENTERTAINMENT.) (Cover made by me. As you can see, I made that thing on IbisPaint. I understood nothing about making book covers and I messed up on the proportion many times so I gave up and that's how the cover came to be. Idk how to shade and make backgrounds/landscapes btw) (Tbh I wished I made this far earlier because it's late 2025, no one is going to read this pile of nonsense. 😭) YOU GUYS HAVE AN OPTION TO CHOOSE THE DIRECTION OF THIS STORY THROUGH FREQUENT POLLS I MADE!!! First thought of and made on 1st Dec 2025 Posted on 6nd Dec 2025 cuz I was feeling confident for that hour. I can proudly say I've been doing this book since last year hahhahahahahahaha (get it cuz I did this thing is Dec 2025 and now is Jan 2026?) I made the cover btw
  • The Boney Hero (Sans x BNHA crossover)  by DontAskImN0body
    DontAskImN0body
    • WpView
      Reads 159,926
    • WpPart
      Parts 52
    At a genocide run Sans unexpectedly wins against ¿Chara? and something strange occurred, the timeline was thrown into chaos. As a result of this chaos, Sans unknowingly was brought to the world of My Hero Academia where lies a world full of quirks. Now we will find out what journey is to unfold with Sans now in this world. Welp this is my first story... so yea..... im pretty sure I'll make a ton crap of mistakes basically typos everywhere.. sooooo just bare with me okay? I'm also always running on boredom and laziness while writing this. Also this is fucking cringe... Welp um..feel free to drop your ideas I'll definitely consider them... ¯\_(ツ)_/¯ Also this story is definitely not original and inspired by a lot of different other stories that came before it {!Completed} .
  • Cold-Hearted LOVE by dusty-boi7632
    dusty-boi7632
    • WpView
      Reads 143
    • WpPart
      Parts 5
    Based on a true story (actually happened, maybe in Roblox, who knows.)
  • Starting Over by SpiritWolfNura
    SpiritWolfNura
    • WpView
      Reads 1,436
    • WpPart
      Parts 19
    If given the chance, would you start over? After falling into a timeline where nobody was murdered, his mother never died, and his father was never erased, Sans should be ecstatic that he has a second chance with his loved ones. But there is no denying the trauma he'd been through, either. Everyone is supposed to be dead, after all. What if Frisk comes back to take it all away again?
  • I'm Dying (Papyrus x Sick Reader) by Celesterra
    Celesterra
    • WpView
      Reads 1,813
    • WpPart
      Parts 5
    Y/n has been sick for years and never got better. She went on a trip with her parents to Mount Ebott, but falls down into the Underground...
  • Forget-me-not ~ XChara x Oc by normallynormal_
    normallynormal_
    • WpView
      Reads 100
    • WpPart
      Parts 5
    Timeline after timeline, what if there's a human girl who remembers it all..? [Xtale Chara x OC] I HAVNT SEEN A GOOD COMPLETED XCHARA STORY (thats been updated recently) SOOOO IM MAKING ONE HOPE YALL LIKE IT AND XTALE IS STILL RELEVANT -_-
  • I'm adapting to the Undertale world by marvihv
    marvihv
    • WpView
      Reads 17
    • WpPart
      Parts 3
    Frisk finally achieved the perfect ending, bringing Chara back to life. He turned Asriel back into a monster, resurrected WD Jaster from the void, achieving the perfect ending, but Sans couldn't bear it. He forced Frisk to tell everyone about his Reset ability, but contrary to his expectations, everyone forgave Sans. All those timelines became unbearable, despite Frisk's promises that he wouldn't reset.Until Sans didn't believe him, and before the monsters left the surface, Sans finally took action.
  • Despair - Undertale x Male reader  by Calamity-boi
    Calamity-boi
    • WpView
      Reads 17,019
    • WpPart
      Parts 17
    (Cover by Hetiru on Deviant Art.) Several years after Monsters returned to the surface, this story follows Y/N, a quiet and reserved highschool student just trying his best to manage his day to day life. Between the bullies, lack of a family or friends, and two new transfer students making everything even more difficult for him, Y/N decides he doesn't need to deal with it anymore - and finds himself at Mt Ebott. ⚠️ WARNING ⚠️ This is a somewhat dark story. If that's not your thing, or if subjects like depression, suicide, and self harm are difficult for you, please do not read this. Otherwise, please enjoy! (Once I actually start adding chapters of course.)
  • Whose Reality Am I? (Frisk x Male Reader) by Little_Spooky756
    Little_Spooky756
    • WpView
      Reads 14,416
    • WpPart
      Parts 31
    Y/N wakes up in a void and goes around the multiverse (Also these powers aren't mine, but I wanted to use them and put my own spin on it, if you know where they're from then good on you, your cool in my book)
  • Colorless (Ink!Sans X Emotionless!Reader) by Pokii_Skips_Tea
    Pokii_Skips_Tea
    • WpView
      Reads 2,516
    • WpPart
      Parts 4
    Yep it's a me Pokii-Skips-Tea From Amino (To those who know me up there, and yes it's me. Although I doubt anyone from Amino will be reading this but still I don't want people asking me if I was really Pokii-Skips-Tea from Amino not that I'm populor or anything but still :/) and Yep I'm writing a reader X Ink Sans story because I can,because I'm bored and because I really want to try and improve my writing skills because I hardly write anything anymore so ye. Really hope you like it^^ (Also Ps I decided to make the (y/n) in this story Gender less in order for it to fit a boy or a girl because I really don't think people do that enough and just use a girl (y/n) every time ^^)
  • Play With Your Soul (Undertale x Male Reader) [Season One] by NoNameOmo
    NoNameOmo
    • WpView
      Reads 13,299
    • WpPart
      Parts 18
    [season one] [Y/N] had always struggled to put effort into anything, despite the immense potential simmering beneath the surface. Ever since that fateful day when everyone began to see him as a freak, a monster, he had resigned himself to apathy, allowing the world to shape him into someone who barely tried. Even the Great Change two years ago, when magic surged into the world and monsters emerged from the underground, failed to spark any motivation within him. But now, with his mother deciding it was time for him to live with his aunt, a flicker of hope ignited within him-maybe this move would bring about a change. Maybe, just maybe, something good would finally come his way. ... .I don't own undertale and any of the characters that are not OCs or [Y/N] .I don't own any of the art/images that is used in here . I don't own any of the songs/music in here
  • My Unplanned Plan by DreamInThatNightmare
    DreamInThatNightmare
    • WpView
      Reads 1,408
    • WpPart
      Parts 94
    Ink's drunk Yeah...
  • Guns n' buttercups by freddy_fivebear
    freddy_fivebear
    • WpView
      Reads 1,019
    • WpPart
      Parts 10
    A short cocoapowder fanfic that shouldn't exist anymore