Undertaleau Stories

Refine by tag:
undertaleau
WpAddundertale
WpAddsans
WpAdderrorsans
WpAddinksans
WpAddpapyrus
WpAddnightmaresans
WpAddfrisk
WpAdddreamsans
WpAddaus
WpAddchara
WpAdderror
WpAddsansau
WpAddink
WpAddkillersans
WpAdddreamtale
WpAdderrorink
WpAddnightmare
WpAddunderswap
WpAddunderfell
undertaleau
WpAddundertale
WpAddsans
WpAdderrorsans
WpAddinksans
WpAddpapyrus
WpAddnightmaresans
WpAddfrisk
WpAdddreamsans
WpAddaus
WpAddchara
WpAdderror
WpAddsansau
WpAddink
WpAddkillersans
WpAdddreamtale
WpAdderrorink
WpAddnightmare
WpAddunderswap
WpAddunderfell

1.2K Stories

  • Same Outcome Yet Different Paths  by AverageGuy-141
    AverageGuy-141
    • WpView
      Reads 907
    • WpPart
      Parts 14
    Cover art by sansthepacifist (The story gonna be sh#t/Sh#t writing) (Busy daily life & laziness) (Chapters/Parts get rewritten often) (Inconsistent releases) ⚠️Warning:angst,¿abuse?mentions,depressions stuff mentions,drama. A/N:(despite my horrible writing,still afraid might be little too sensitive/uncomfortable for some y'all) This is a work of fiction and you been warned i seen interesting fanfics about Fgod AU. One particular is "Friends meeting Enemies", although seem like the story either got abandoned by the author or they're busy irl. i want to see Fgod characters interact with their og counterpart. so i made this, This story is heavily inspired by og "Healing What Has Been Broken" made by harrish6. disclaimers:franchise aren't mine & all characters belong to their respective owner. Undertale-Toby Fox Fgod Au-Harrish6 Ask!Error/Errortale-CQ Ink!Sans-comyet Dreamtale-AU community/JK Something New-rahafwabas Dusttale-Ask-Dusttale Horrortale-AU community/SAS Fresh-CQ Aftertale-CQ Underswap-Popcornprince Underfell-Vic the UnderfellaX Alphatale-Team Lavender A/N:(too lazy to search & credit em all,All characters belong to their respective owners, as for "Au community" ones, don't recommend searching unless y'all matured) Clarification: -Few of these insert arts aren't mine -To differentiate between OG Au's and Fgod au. I named the Fgod characters *name*(FM) and the original just OG's FM=Fate Multiverse OG characters will have their canon designs/appearances based on their each creators art style & while FM have fanons. i try to make OG character as canon/headcannonically as possible, but there will be some originalities. -This my first time writing fic. Don't expect anything good here. Nothing in this story make senses. Now, get ready for cringiness and worst grammars you ever goddamn see.
  • Fallen to Freedom (A Third Party Rewrite/Continuation) by RainbowRose245
    RainbowRose245
    • WpView
      Reads 95
    • WpPart
      Parts 5
    In a particularly dark mindset, Error decides to end it all the only way he thinks will work; jumping into the Void. However, as Luck would have it, his Destiny took a drastic turn from that moment forward. The flip of a coin and a fall down below, free from Fate's strings, Error must navigate her new reality in a place all too familiar. Can he truly be happy in such a place? Or will he remain stuck in the past? FGODE Fic based off of the Original by @absolutelYin-Sane and the Adopted continuation by @Originalsparkstar that hasn't been updated since 2022. I really like the idea and have decided to take it and put it in a blender in my brain <3 Error will use he/her pronouns in this fic, so be warned, I guess? Not changing that no matter what anyone says. Cover art by meee <3
  • Reincarnated as a Voice by IHamTiredAndBored
    IHamTiredAndBored
    • WpView
      Reads 522,743
    • 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
  • Taking cover by Battle_Penguin54
    Battle_Penguin54
    • WpView
      Reads 172,221
    • WpPart
      Parts 7
    Frisk has spent her entire life surviving by stealing from the wrong people. After a failed heist lands her in the hands of the Black Roses, the city's ruthless human crime syndicate, she is offered one impossible choice: infiltrate their greatest rivals, the Monster Syndicate, or die. Armed with nothing but a fabricated story and orders to destroy the Family from within, Frisk earns the trust of monsters she was taught to fear. But the deeper she sinks into their world, the harder it becomes to believe the lies she's been told. As loyalties blur and dangerous friendships form, Frisk finds herself caught between two criminal empires on the brink of war. When her betrayal is exposed, both sides force her to make a choice that could cost her everything. In a city ruled by blood, trust, and family, survival may no longer be enough.
  • My Life as the Prince's Servant (UF!Asriel x Male Reader) by Ungrateful_Hacker
    Ungrateful_Hacker
    • WpView
      Reads 8,917
    • WpPart
      Parts 22
    After the monsters broke free from the underground they enslaved all of humanity. The monsters took complete control over the world and the world was powerless to stop them. This is the story of a young boy named Matt O'Donnell, a boy who was an orphan during the time of the monster invasion was captured by the prince of monsters, Asriel Dreemurr. Will he find a way out of this dreaded nightmare and be free or will he suffer and die. (I don't own any of these pictures)
  • GENERATIONS: Lost Links • part two (Freedom AU Book 15)[FNAF/UT] by MapleInk62
    MapleInk62
    • WpView
      Reads 386
    • WpPart
      Parts 31
    Ever since the Anthros' arrival to settle in and make lives for themselves among the Monsters, Newer Home slowly continued welcoming new Anthro faces. A couple being new faces, though many would be family members reuniting with one another at long last. Some more so for the better than others. Many Anthro families have yet to be made whole again, while the reunion of families proves to only prompt more questions to these family mysteries. Mysteries both of family members who have found each other, and mysteries around lost and missing family links-and all are mysteries the Anthros are willing to uncover.
  • The Defiance (A Undertale OC of a fallen human.) by ArtisticFluff
    ArtisticFluff
    • WpView
      Reads 4
    • WpPart
      Parts 3
    Once upon a time, two races ruled over earth, humans and monsters, one day, by mistake of each other, the humans declared war on the monsters, the humans were victorious, and sealed the monsters deep down Mt.Ebott, Come along with our fallen human, into an adventure in the underground, join them as they adventure through dangerous places in the underground alongside flowey! (THIS COMIC TAKES PLACE ON WHAT IF ANOTHER HUMAN FELL BEFORE FRISK? THAT IS THE SOUL OF DEFIANCE! SOMEONE WHO REFUSES TO GIVE UP AND PROTECT WHAT'S THEIRS! A COMIC MADE BY ARTISTICHOLLOW! PLEASE DO NOT COPY UNLESS YOU ASK!
  • UnderJourney by ThisKeyJawa
    ThisKeyJawa
    • WpView
      Reads 55
    • WpPart
      Parts 5
    I created this AU in 2022, but I don't have any digital drawing skills xD So I always used my notebook to draw UnderJourney stories, and the first lore seemed weird and didn't make sense because it involved several other AUs. So in 2026, I created a new lore for UnderJourney. My English is not that good. So I apologize profusely T^T
  • Seekertale by WolfixLoveToDraw
    WolfixLoveToDraw
    • WpView
      Reads 146
    • WpPart
      Parts 4
    Short Summary: An Undertale AU, which is a crossover with my The Last Star Seeker series. Long Summary: A young human girl falls into the underground. After being caught and taken up to the castle, they face their judgment. Little did everyone know that this girl had magic like all monsters. The king decides to SPARE her in hopes that she could break the barrier without having to take more souls. Years pass, and Astrella hasn't figured out how to break the barrier, but when she sleeps, she's given messages that shake her to the bone. So, with the help of a funny skeleton, they solve the mystery together and maybe more about themselves too. Yes, this is an oc x canon story 👀
  • The Child- A Sans AU Fanfic by That_Random_Ship
    That_Random_Ship
    • WpView
      Reads 614
    • WpPart
      Parts 9
    Ink becomes a child....yea! and Error & friends are forced to take care of him... Some of you would recognize this fic from a oneshot I wrote a while ago. Well I decided that I liked it enough to spin it as an actual story, rewriting the original oneshot and expanding upon it :) This Story is meant to be an Errorink fanfic, because I am the #1 Errorink fan, if there are no fans then I am DEAD. Anyways...book cover is mine (lmao)
  • A Strange Alliance: A DustSwap fanfic by HappyWriter62
    HappyWriter62
    • WpView
      Reads 283
    • WpPart
      Parts 8
    Trying to make a proper Dustberry/Murderswap/Dustswap story now. Everyone deals with the madness of the multiverse in different ways. Some just avoid it or watch from a distance, like Outer or any bystanders of AUs that the trouble intrudes. Some cause trouble like Nightmare's gang and then there's those that try to prevent it like the Star Sanses...Well, that's how it SHOULD be. Many consider it simple like that where none of these three groups overlap. The two sides fight and the bystanders stay away. But...Swap consistently contradicts this system. He hangs out with "bystanders" in other AUs when outside of battle and if not for being part of the Star Sanses, would be a bystander. He befriends Error and Horror or the "enemies" and tries to keep Dream or Ink out of trouble. So when Swap goes missing, Error quickly jumps into action and gets the gang to help him. It lands Dust and Swap into a strange situation and is stuck together, forced to be on the same side. What would this alliance reveal to them when the divide is broken down between them? Read to find out.
  • Sanscest Oneshots by WallyWestSupreme
    WallyWestSupreme
    • WpView
      Reads 3,290
    • WpPart
      Parts 8
    Sanscest Oneshots! This is basically a revamp of my old oneshot book that I unpublished. There will be Oneshots from my old book, just (hopefully) better! None of the characters belong to me! Also posted on Ao3 under the name: BeingStraightIsOverrated
  • Dodging Death  by YummiTheLazy
    YummiTheLazy
    • WpView
      Reads 10
    • WpPart
      Parts 2
    (Undertale!Au's x reader) "When life gives you coffee beans, make espressos..? Isn't this supposed to be lemons? Hold up- I got the wrong script-!" What is scary about death? Is it the process that's scary? the pain and suffering that you have to tread through in order to drop dead. Or is it the fact that there is no conformation of what comes after death? Is it full of angels, or just pure nothingness? How long will you dodge your demise? How will you.. persevere? ♡ "Your knees are scrapped with gravel and dirt, cuts and bruises littered all over your body. Your own bloodied hands swiped the sweat off of your forehead. You stood up even though your legs are about to crumble, the soul within you shivered ever so slightly. You are going to survive. No matter what. Who are they to tell you to die? It could only be you who can decide that. Your story is not theirs to end." You are filled with... 💜 ••Perseverance **Undertale and all of the different kinds of variations/alternate universe that are mentioned in this fan fiction is not mine! **I'm only writing this because I'm bored and for fun **Updates may be slow **mentions suicide, death, and the different kinds of concepts of the afterlife. other trigger warnings may add to this list in the future. ** The author's first language is not English, so bear with them as wrong grammar and spellings are bound to happen. Happy reading! ꨄ︎
  • Happy N' Bombs by JinxieShy
    JinxieShy
    • WpView
      Reads 25
    • WpPart
      Parts 1
    One is a redeemed villain with a lifetime of solitude and no friends. One is a Happy-Go-Lucky skeleton with too many friends counting on them. Can they survive as each other?
  • The Outcasts I - The Beginning by Psych0t1c_Bread
    Psych0t1c_Bread
    • WpView
      Reads 407
    • WpPart
      Parts 73
    A small gang from New York, known as the Outcasts, maintains rule over the streets of Brooklyn, creating trouble and having fun like the children they are. However, when a stranger appears in their home seeking refuge, what will they do? Meanwhile, Delta, one of the AU guardians, stumbles upon a strange crack in the ground. But what happens when the mysterious crack begins sucking everything in like a black hole? And what happens when Delta gets sucked in? (Nothing except for the plot, who I kind of made Delta to be, and the Outcasts as a group belong to me - credit to the actual creators of any Sanses I use here. The Outcast gang itself is highly inspired by Newsies and The Outsiders.)
  • Ccino's multiversal cat cafe by IisYourmomhi
    IisYourmomhi
    • WpView
      Reads 27
    • WpPart
      Parts 4
    hi :) this is based on a head canon that I made a while ago and since I'm no good at descriptions i'll just tell you the head canon I like to believe that Ccinos AU is a very popular place to chill kinda like outertale but here's the thing every one in cafetale doesn't know of the AUs so his cafe is closed to any multiverseal creature but is open at night and vice versa for the people in his AU. at night no matter who you are or what you've done your allowed in the reasons are he knows you wont attack him or his AU everyone loves his coffee to much for that he doesn't sleep hes like nightmare or dream in that seances he eats coffee beans to generate energy he does pretend too sleep for his brother tho but what happens when error tries to destroy his AU no ones gonna care... right? none of the characters are mine bla bla bla all rights go to the creators of the character bla bla bla hope you enjoy this probably crappy story I made :)
  • Undertale Retold | an ut recap story by Stat1c489
    Stat1c489
    • WpView
      Reads 11
    • WpPart
      Parts 2
    After going exploring up a mountain that 7 prior humans have been found missing after adventuring, you trip on a conveniently placed twig. You trip on it and fall into the underground, home of all monsters after the war. As you go through monsters with fights and friendships. But, something feels off about some of the monsters... This is an undertale recap story. This is why interpretation of what happened but it's mainly undertale pacifist in story form. There will be some ocs but not many. My oc braylyn (3rd fallen human, bravery soul) And my friend needlings oc Cloudy (6th human, Perseverance soul)
  • Softspot (The Discontinued Original) by cupofcoffeecup
    cupofcoffeecup
    • WpView
      Reads 6,728
    • WpPart
      Parts 14
    The story of the King of Negativity who suddenly felt a not-so-negative emotion and his emotionless minion who got his feelings back. (Highest rankings: #117, Cream) (Note: this book will be discontinued. Please read the A/N chapter of it if you would like to give me the directions to transfer ownership. You MUST read the WHOLE chapter. Thank you.)
  • Kidnapped For A Truce by Lucid0734
    Lucid0734
    • WpView
      Reads 355
    • WpPart
      Parts 8
    ***I wake up in what looks like a cave and try to sit up. I flinch, grabbing my head. 'Jeez, that hurts...what happened to me?'*** This is an Undertale AU story. Please don't attack me if the characters are inaccurate and/or canonical. I am aware because this is my AU. There will be ships, but not immediately. If you disagree with a ship, then leave. Nothing is stopping you. I hope you enjoy&lt;3
  • Forgotten... (a sanscest story) by destructive_bean
    destructive_bean
    • WpView
      Reads 811
    • WpPart
      Parts 11
    Monster finally got their happy ending on the surface. ... or did they? One by one monsters are dissapearing without a trace and the humans aren't doing anything to help them. However a certain group of skeletons are lucky enough to just survive and them being the only ones to make it out alive. Now there's someone who can finally tell them the imformation they so desperatly need. ... but what if they dont remember anything not even their own friends? highest ranks (for now) 20 in bloodlust 7 in crossmare *none of the art is mine*