
Pain/Determination/???by Timeisthekey45
Sans was never a "Good Guy", he smiled, joked, helped the inhabitants of the Dungeon. And yet. He felt like he was stuck in a gray routine, the same scenario o...

Bad end friends x oc by ☆Murder drones defender☆
After the war, his soul separated as he froze. I wonder where his new life will begin...

a light in the darkness (an undert...by rywn_writes?
If you only care about one person, How broken will you be when they leave? How lost would you be without your light in the darkness? How far would you go to see them aga...

BFFs: Best Frenemies Forever (Sans...by wafflesugarsyrup
After Frisk freed everyone from the underground, they couldn't help but want their newfound friends (Flowey and Sans) to get along. (Spoilers: Flowey and Sans hate each...

Cursed (Female!Chara x Male!Reader)by Incurvate
[THIS IS A REBOOT OF 'CURSED.'. IT IS AVAILABLE ON MY PROFILE. BUT IF YOU DO NOT WANT TO BE SPOILED, READ THIS IMPROVED VERSION. SPOILS IN THE COMMENTS WON'T BE TOLERATE...
Completed

CREATORS BEGINNINGSby 𝙵𝚎𝚕𝚒𝚡
Underverse self insert
Includes Y/N's that might actually make sense
REWRITE

✧ Destiny of Sun Descendant ✧by Future novelist
He was a prophecy that was chose to save everyone.
He was given a new name and a new life, force to guide the fallen one to fulfill the prophecy. Yet, if he was given in...

Deltarune auby Just_Viccy (not irl name)
Hi! So uh, this is my first ever book on a website so sorry if it's cringey af or not at all in character.
Btw, this au is not complete 100% but it's getting there!
Enjo...

Underwrath (An Undertale fan-story)by Roomy_Hanni
Humans and Monsters have always been enemies but they never pressed enough to kill each other on a massive scale. For the past thousand years the situation between the t...

Book 2: I Have Fallen Again...by Whispering creeks
it's been a few years since I released the monsters in real life... I miss them, but I'm an adult now... I was "working out" as I fell into a worm hole again...

Voidtale Charactersby Sans AU Yoinker
Art belongs to @JaelPeñaloza
This is just all my characters for Voidtale-

songs for the fallenby C. D. Snowes
[Undertale (2015) originally by Toby Fox. This story is an AU, and is written to be mostly understandable to non-fans.]
TL;DR AU Chara & Frisk slow-burn enemies to frien...

Male reader X underverse (Revamp)by 💜K&C❤️
???: I want a fresh start and you seem like the perfect specimen to use for this story, Y/n L/n.
(So in short the first story of this still happened but ???(me) Erased t...

Soulkeeperby Sparki0322
This story is a What If scenario based on the Ask Error unfinished Ask Blog. The question is, what if Blue(Swap!Sans), actually chose to absorb the red soul(aka Swap!Cha...

Descent: transmigrated into Undert...by Amador DiCaprio
I died.
But I soon found out that I'd been transported to a post-pacifist Undertale timeline.
Now as Zen, a goat-like monster. I'll do my best to ensure this world lives...

Misunderstandings From A Dreadful...by CallmeMem_Memmory
It's finally summer time, a break from academic presure. Frisk, a freshman in college, finally decides that it is time to finally relax. After all, architecture is a rea...

Swapped Places ❤️💛by Nukefuse
A short story idea I came up with about Clover and Chara (Cocoapowder ship).
The underground is saved by no other than a human child, and it seems everyone gets their ow...
Completed