Undertale Stories

Cover image made by me. Someone meets their end too soon and meets someone who gives them another chance to live a more fulfilling life. One that they would enjoy despit...

!! STORY COVER IS MINE, CHARACTERS DO NOT BELONG TO ME EXCEPT Y/N !! (ps, heavily inspired by my other books, mainly Multiverse's Unwilling Protector.) (Book is currentl...

Sans has gotten himself stuck in the void between worlds in a successful attempt to stop the resets of his timeline. He's not sure how long he's been chillin' alone ther...

Rewards: #1 Crossmare #1 IN UNDERTALE?!?! ARE YOU SERIOUS?!?! *** There wasn't a creature in the entire multiverse quite like Nightmare. Most viewed him as an insane ove...

#1 of 61.7k tagged with Undertale 12/06/24 After drowning as a human, Ashe reawakens as a DustTale variant of Sans. With his ghost Papy helping keep him from falling int...

You didn't have a bucket list or anything, but you wished you could've at least read a few more fanfics or done literally anything fun before dying. Oh well, at least yo...

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 peop...

What if..someone from our world was reborn as fellswap sans? But an accident when he was young leads to becoming blind for a long time and papyrus feels guilty about not...

Fresh is Admin of the Multiverse!? This can't end well ... or can it? This is an alternate universe - er, multiverse - where Fresh is responsible for the monitoring and...

(Y/N) and Frisk are just two normal Metropolis citizens! Just because they seem a little different doesn't mean anything otherworldly is going on! ...Except, these two o...

[GN! READER INSERT] "I'm the comic relief character!" "You're annoying." "Oh." ====== With the cool and quiet MC, the tough and headstrong...

What if someone became papyrus from underswap? What if they gave their brother more freedom? What if they were the one that error kidnapped instead of sans? (Things wil...

This book will NOT contain smut/lemon, if you want that go to my other book! I also take requests. ⚠️I don't own any of the characters I use!⚠️ I made the cover on Ibis...

What if sans the funny skeleton was transported to Re:Zero? this fanfic answers that question, what will Sans do? how will he adapt to this new world? We'll just have to...

♡>>>Lovely cover by: @Hisayashi<<<♡ ghouls has been spotted among the city, all citizen has they're guard up. The Government are trying to find a way t...

What if there was a multiverse where Error and Ink were friends? What if the voices were the creators? What if they went to the Fgod multiverse because the voices were b...

Somehow...I've become a sans...and not just any sans.. I'm classic!? What the flip is going on!? Wait why are different sans and papyrus's showing up at my home? I didn'...

Matt was a regular person who was a big fan of Undertale and its fangames. One day, he dies because of a person accidently knocking him off a mountain while he was hikin...

You were afraid. For the first time in your life, you were truly afraid. You weren't afraid of the never-ending darkness that had now consumed you. You weren't afraid of...

What if someone died and became the tree of feelings from dreamtale? Well things won't stay the same, that's for sure. (Different everything etc, different personalities...