Undertale Stories

What if someone from our world became error and didn't destroy au's and left that for nightmare and his gang and claims au's? ( different things including personalities

Complete! The player has just finished fighting sans and has left him to die. As sans turns to dust he sees a flash of light before everything goes black. He then wakes...

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...

#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...

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...

Where am I!?And why the heck am I suddenly a blue talking echo Flower?

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...

(Not my picture) So basically, this is going to be like sans x tiny reader thing. NO STEALING MY STORY!! That's all. :) and Frisk will be a Borrower too.

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 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...

Well to start off, I'm just a teenager and I died in my sleep and was reborn as a skeleton, who is supposed to be error sans mom?...*stares at the cute bundle of cutenes...

"Woah~ This is cool, Hm.. Hehe." What would happen if one of us adventure seeking creatures finally got their wish? "ʜᴀʜ! ʏᴏᴜʀ ꜱᴏ ɴᴀɪᴠᴇ!" But it all...

I was just a 19 year old, living my mundane life, until I died... and was REINCARNATED!? And not only that, I was reborn in the famous videogame release in 2015 Undertal...

Thanks to Frisk, the Underground is liberated. And the six humans have returned. Guide Clover back to their friends. (Prequel to Ask Post-Pacifist Noelle, HEAVY Undertal...

You are walking along a dark alleyway when you are ambushed and knocked out. In another universe, a young Sans is attacked and you both wake up in a white space with an...

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...

**PLEASE NOTE** -Cover art does not belong to me, I will only take credit for the stories, I do not take credit for characters. -I will not do any lemons -This is my fi...

I've seen some Undertale fanfictions where readers and original characters are sucked from our reality and transported in to the reality of Undertale and it's several au...

Nobody knows who the Riverperson is... nobody but a single Skeleton erased from space and time. So when he's pulled out of the Void, what secrets will be told? What is t...

your name is y/n and you have blue eyes and pink hair you had 7 siblings 4 brothers and 3 sisters your mother abused and your the third born you have a older sister and...