Undertale Stories

A world ruled by judgement, mafias, and violence. Y/N wants nothing more than a simple life, even though she was born as the daughter of a higher class. She has a secret...

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

#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...

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...

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...

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...

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...

**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...

The reader wakes up to a new life as a monster skeleton. In a new world, that's filled with monsters, humans, and magic. But instead of living their new life to the full...

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...

What if someone from our world died knowing a lot from the undertale and their multiverse/underverse? What if that person also knew about the balance and didn't creat to...

Do you know what it's like to know your future? Do you know what it's like for no matter what you do, you only seem to make things worse? Do you know what it's like to a...

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'...

Cold. Everything was cold. And dark. I was so alone... how could I have wanted this? This couldn't possibly be better than before... the warmth, and the light, and the...

"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...

Ok...but what if I told you that I died and reincarnated as my super favorite sans?? The Fgod Error sans. But the problem for me is not that, but that I love to flirt...

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...

(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.