1 - 20 of 44,370 Works in Sans (Undertale)
Navigation
Listing Works
-
Tags
Summary
La realidad no es más que un tejido fino sobre un abismo de estática, y alguien —o algo— ha comenzado a tirar de los hilos.
Tras la aparición de una fractura en el tejido del multiverso, lo que comenzó como una misión de rutina se ha transformado en un descenso a la locura. Mientras los guardianes del orden y el caos intentan mantener una fachada de normalidad, los cimientos de la existencia comienzan a resquebrajarse. Fragmentos de recuerdos, lealtades fracturadas y una conexión prohibida amenazan con borrar la línea que separa la identidad de la aniquilación.
Dream y Nightmare custodian un pacto de silencio que podría salvar —o condenar— a todo lo que existe. Pero en el silencio, algo los observa, y la sincronía que comparten empieza a hacerse notar más allá de su voluntad.
Todo vínculo tiene un precio. Y en un multiverso donde la verdad es el enemigo, la ignorancia es el único refugio que queda.
-
Tags
Summary
You were kidnapped by the Bad Sanses gang because you apparently "stole" Horror's axe. All hell breaks loose.
arc 1 (1-15): encounter
arc 2 (16-29): after
arc 3 (30-?): knit -
\\Sweammare\\ Night blindness by Anonymous
Fandoms: Undertale (Video Game), Undertale, dreamswap - Fandom
19 Jul 2026
Tags
Series
- Part 5 of Sweammare Angst
-
Deltarune fanfics-oneshots-headcanons by LowPolyMochiCat
Fandoms: Deltarune (Video Game)
19 Jul 2026
Tags
Summary
This will be a collection of any deltarune fanfic i write!! (Ex: oneshots, head cannons, multi part fics)
-
They seemed fine yesterday.... by TheOuroborosWakes
Fandoms: Deltarune (Video Game), Undertale (Video Game)
18 Jul 2026
Tags
Summary
Everything is too much. Kris isn't in charge of their own body anymore. Their friends aren't really their friends. The girl they love doesn't love them. The only place they can have fun isn't going to be theirs anymore. Everything is going wrong and this is all their fault. They want it to end.
-
Tags
Summary
message for pen_pal, since i cant find any other way of maybe reaching them.
not a fic
tags are to increase the likelihood of reaching of them finding this,
(tagging similarly to what they had)- Language:
- English
- Words:
- 67
- Chapters:
- 1/1
- Hits:
- 5
-
Tags
Summary
With discrimination on monsters on the rise, the need for medical rises with it. Who better than someone who has a bunch of secrets and who can’t help but to be kind to even the smallest of kids - you.
The schedule for this fan fic is going to try to be a chapter every two weeks but i am a tired college student so who knows how ill keep to that lol. I hope you all enjoy this newest passion piece of mine this story has gotten me through some rough rimes recently.
update: ive gotten this question a bit but this is my own take on the underfell au. its not the canon underfell au.
-
Tags
Summary
In the small town of Ebott's Wake, Oregon, there are many colorful characters. Perhaps none so colorful as Old Man Schmitt, at least until the Barrier was broken and the monsters showed up. In many timelines, Schmitt created a device that he thought would allow him to transcend mortality and humanity, becoming a being of limitless potential. And in one timeline, it worked.
Sort of.
-
Ink does not hate by Marrrgic
Fandoms: Undertale (Video Game), Alternate Universe - Undertale Multiverse | UTMV (Undertale) - Fandom
19 Jul 2026
Tags
Summary
Ink can't hate. Not really. But he also doesnt want to. They love everything way too much for that.
An Ink character study that wormed its way into my brain and wouldn't leave until I wrote it. And now you get to read it! YAY!
Might be a lot ooc, just consider this a alternate ink, we're just going off vibes here.
Ink belongs to comyet
Error belongs to Crayon Queen- Language:
- English
- Words:
- 645
- Chapters:
- 1/1
- Hits:
- 0
-
Tags
Summary
You, a human, find yourself in the familiar horror of the Void, after your SOUL is yet again rejected from an AU- seemingly never able to find its place in the multiverse. Yikes. Maybe a certain group of skeletons will take interest in your situation..? Loosely based on the song Ghosting by Mother Mother. (This story is written in 3rd person, so no mentions of y/n or the reader. The human is literally just referred to as 'human.') WIP fic! I pretty much update daily :)
-
Tags
Summary
In the beginning, there was a collective of voices. The collective needed a muse, for they could not create full universes. The only things they could make were unwhole sketches, and from one of those sketches, came their much needed muse, who was named Ink.
At first, Ink obeyed their needs. Created what they wanted him to. But when Ink wants to create on his own, the collective, "The Creators", needed another being, as their viewing of Ink's creations were deemed useless for their multiverse.
That other being is a glitch that fell into the anti-void, Error.
But, even though this issue is easy to fix, stubbornness leads to otherwise.
note from august 28, 2025: Fic name changed to Cause and Effect. Former name is FGOD AU: An Alternate Story.Series
- Part 1 of Cause and Effect (FGOD:AS) Collections
-
Tags
Summary
There are a number of little ideas within my head—or strikes of inspiration from fellow Undertale creators—that I'd love to write about! But they need a home...
Welcome to Reader x Everyone in the Multiverse!
I don't have a schedule, but I try to post often! I hope you enjoy these stories :3c
-
Tags
Summary
Y/N's life in the village is changed forever when a new monster enters her life... Soon everything starts changing and coming to light... The only problem is.... Everyone knows, but her....
(Summary Updated on May 28, 2026)
-
Tags
Summary
Skull just wants to have lunch in peace but reader won’t leave him alone.
-
Big Shot Beginnings by c00lsk3l3t0n95
Fandoms: Deltarune (Video Game), Undertale (Video Game)
19 Jul 2026
Tags
Summary
Spamton G. Spamton has had enough of being trapped. He refuses to be kept in the dark any longer. He needs, once again, to pursue the light.
Papyrus just wants to help him. Maybe, just maybe, it'll make up for what he's done.
Series
- Part 7 of Papyrus
-
||Sweammare|| Collection of Ideas by Anonymous
Fandoms: Undertale (Video Game), Undertale, dreamswap - Fandom
19 Jul 2026
Tags
Summary
This is a collection of my ideas, WIPs and other drafts.
Series
- Part 4 of Sweammare Angst
-
Tags
Summary
When Nightmare begins abducting Frisks across the multiverse to harvest their soul, one captive proves far more dangerous than he had anticipated.
Echotale Frisk has the power of Determination yet no power to SAVE or RESET. Instead, it compensated through her unstable soul that seemed to bends reality itself, making her both the perfect weapon, and a threat to everything around her. Trapped among three broken skeleton and forced into Nightmare’s service, she must survive through strategy, deception, and carefully negotiated loyalties.
Meanwhile, the only person who truly knows her, is tearing through worlds to bring her home.
-
Everything I do, I do for you by Kaci707
Fandoms: Underfell - Fandom, Swapfell - Fandom, Underswap - Fandom, Undertale - Fandom
18 Jul 2026
Tags
Summary
Akira is being trialed for murder. Till he turns 16 he will attend Holton Academy, the school for the rich and troubled alike. Will he spend the rest of his time at school waiting for his inevitable fate? Or will he make as many memories with the skeleton brothers as he can with what little freedom he has left?
Come along on this journey and look over Akira as he handles school life, a job, a sick mother, friends and budding love interests?
-
Tags
Summary
[ This is mostly for fun ] [ Leviathantale credits to Skumhuu ]
"Good intentions pave the road to hell"
- Language:
- English
- Words:
- 6,087
- Chapters:
- 1/1
- Kudos:
- 1
- Hits:
- 14
-
Tags
Summary
Monsters have appeared from a mountain, in your town! Interested in this new development you head home with high hopes. Sadly it seems humans will be humans, and for some reason you keep getting caught in the cross fire. Luckily you've made some new friends to help you out along the way!
You were just about to head into the nearby town when your phone went off, it was a text. From Otto of all people. A video of him, and what looked like monsters walking behind him. "You should come home (Y/n), things just got interesting."
Reader is female (sorry) there will be smut at some point, don't know when though...
Series
- Part 1 of Blood N Bones Stuff