1 - 20 of 41,244 Works in Sans (Undertale)
Navigation
Listing Works
-
Undertale Purple - Perseverance by AnonymousWriter08
Fandoms: OMORI (Video Game), Undertale (Video Game)
02 Nov 2025
Tags
Summary
A long time ago... humans and monsters lived in harmony. Until war broke between the two races.
The humans were victorious and sealed monsterkind deep underground with a powerful spell, that could only be broken with the power of seven human souls.
This was the tale of Mt. Ebott, and the tale trascended into legend. Those who climbed the mountain, weren't seen again.
And so, begins the tale of the fifth human soul to fall into the land of legend, to fall... into the Underground.
This is the tale of the Purple Soul... Sunny Suzuki.
-
OMORITALE: Fallen Common Sense by Sajsd2000
Fandoms: OMORI (Video Game), Undertale (Video Game)
02 Nov 2025
Tags
Summary
Not Canon to the main story: OMORITALE: FALLEN DOWN
Just funny incorrect quotes, short stories, and occasional shipping moments
What should you know before reading this? simple
This was written as mere entertainment and that Sunny and Aubrey replace Frisk in their Undertale journey and that Undertale Yellow is also canon. That's it.Series
- Part 3 of OMORITALE: Fallen Down (Fan-Series)
-
Tags
Summary
Frisk has faced danger and death many more times than any child should ever have to, but they aren't out of the woods yet. Being the first human in who-knows-how-long able to use magic has shoved them back in the spotlight. And just when their life was settling down into whatever counts as "normal" for the town of Ebott's Wake, where monsters sell ice cream and the gym teacher thinks anime is real.
It's nothing they haven't had to deal with before at this point, but that doesn't mean it's going to be easy, even with Papyrus taking over as Ambassador and the Finest scientific minds in the town working on a way to help Chara. After all, the first fallen human climbed Mt. Ebott for a reason, and it wasn't a very happy one.
And now, that reason knows about Chara too.Series
- Part 3 of We're Not Weird, We're Eccentric
-
Tags
Summary
You are on a quest to die to every boss in the underground, just to see what happens.
Series
- Part 1 of R.I.P.
-
Tags
Summary
Kris can't get over the idea that they've doomed both of the Holiday Sisters in the same way.
They will never recover from this.
-
Mamamangoverse Memes and Incorrect Quotes by Mamamango123
Fandoms: Hazbin Hotel (Cartoon), Murder Drones (Web Series), Five Nights at Freddy's, Deltarune (Video Game)
02 Nov 2025
Tags
Summary
So yeah, I just thought of these and thought it'd be funny
Series
- Part 11 of The Mamamango verse
- Part 5 of Mamamangoverse miscellaneous fics
-
Tails and Alphys love story by RisingTails
Fandoms: Sonic the Hedgehog - All Media Types, Undertale (Video Game)
02 Nov 2025
Tags
Summary
Tails and Alphys start to notice something between them
- Language:
- English
- Words:
- 1,422
- Chapters:
- 3/10
- Hits:
- 31
-
he said do with me what you want but please don't hurt my brother (please don't hurt yourself) by viktorforgets
Fandoms: Undertale (Video Game)
02 Nov 2025
Tags
Summary
all monsters dust the same, guardians are not any different.
-
october 17th : drug side effects & desperation
Series
- Part 4 of whumptober 2025
- Language:
- English
- Words:
- 2,826
- Chapters:
- 1/1
- Collections:
- 1
- Hits:
- 9
-
Tags
Summary
Spanning over ten years, this huge fic will be split into ten parts for each year.
This fic is Alphynecentric, with Alphys at the helm. This is a fic that came outta nowhere (as they all do) and hasn't quit since I started. I have no idea where this will go. All I know is that it is very emotional, romantic, and rather silly.
Just enjoy. This may be my last fic for this fandom.
Series
- Part 1 of Ten Years
-
Tags
Summary
The Multiverse was frozen.
Deep, black ink dripped from the code of AUs.
Nothing new was being created, and nothing could be destroyed. Everything felt definitively fuzzier at the edges as the balance of energies refused to tip for anything...The entirety of the Multiverse was decaying, slowly but surely, and it was all because a certain Creator has gone missing...
-
Cinnamon and spice and everything..horrific. by KittyWorks for A_Random_Microwave
Fandoms: Undertale (Video Game)
02 Nov 2025
Tags
Summary
After the events of DreamTale, Nightmare finds himself hoping between AUs for refuge after the fight. Through this he finds himself in an..interesting AU. With Dream hot on his tail does he leave the AU or goes against his nature and protects it?
-----{PSA from author that I do not support Sourapplestudios, creator of HorrorTale nor do I support Joku, creator of DreamTale.}
-
Tags
Summary
They say writing letters can help. Sometimes, just getting the words down on a page and out of your head can bring people catharsis. It may allow them a chance to somewhat come to terms and heal from the grief that won't leave them.
Ink doesn't understand it. But what the hell, he might as well try.
-
Tags
Summary
Cross reflects back on his and Killer's relationship, slowly realizing what it really was
Series
- Part 8 of The World Ended When It Happened To Me
- Language:
- English
- Words:
- 567
- Chapters:
- 1/1
- Kudos:
- 4
- Hits:
- 26
-
Making A Monster by absurdmagewrites
Fandoms: Undertale (Video Game), Underfell-fandom, Underswap-Fandom, Swapfell-Fandom, Fellswap-Fandom, Fellswap Gold-Fandom, Horrortale-fandom, Crafttale-Fandom, Seaswap-Fandom
02 Nov 2025
Tags
Summary
Sometimes life throws you a curveball. For you, your curveball was going to bed looking like a human, and waking up looking like a monster.
A skeleton monster to be precise.
With the barrier breaking, a large surge of magic descended on the town you live in, and transformed you overnight. Unsure what to do with you, and the others changed, you're ushered into a facility until a monster with similar magic can take you to teach you how to wield the now uncontrollable magic you've been given. After waiting in this place for four years, you'd given up hope that anyone would ever want to take you.
What a surprise for you when you find out that someone does. A lot of someones.
-
Tags
Summary
When a 90s jester skeleton one day decide to skedaddle himself into your everyday life casually without hinderance - you don’t know what to make of it at first.
Living life in a world where the closest thing to a ’real-life’ skeleton appearing before you is only during Halloween - the very impossibility of his eccentric appearance and over the top personality pulls you slowly in.
Having being dealt a bad hand with existing and simply living lately due to a difficult personal loss, you warily assumes he wants something from you with this ’forced’ friendship.But the more time passes in his company, the more you realize that - perhaps he genuinely just wants to be your friend despite your differences? And why does it feel like he knows things you’ve never told anyone before about yourself so… easily?
…Tho, why is he so adamant about never taking those shades off..?
*A feel-good story about the values of friendship, laughter, the gift of living and possibly the meaning of having a Soul.*(Rating may change later on)
-
Justice Evolved by The_Spar1an
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game), Deltarune (Video Game), Undertale Red & Yellow (Video Game)
02 Nov 2025
Tags
Summary
Clover remembers.
After spending quite some time dead, He finds himself with memories he'd rather not have.
Memories that tell him who he truly is.
Memories that haunt him.
edit: lowkey put me on the stuff I was on when I wrote this summary.
Anyway, basically Clover remembers resets, especially genocides. So he basically remembers how to use his powers from previous runs as well, and then la tee doo dee dum, and bam. Justice Evolved.
If you're curious enough to have questions, maybe read the fic. It'll boost my ego. (please)
(edit) Disclaimer: if you want to read for cocoapowder, cocoapowder chapters will be released at a later date. As of this edit, the relationship between Clover and Chara has yet to be explored.
------------------------------This work will contain Original characters for the sake of worldbuilding, and I fully intend to make some of them play major roles in the story.
This is an alternate universe to Undertale Red and Yellow.
This work will be from Clover's POV. (written in first person, not second person, aka "I" instead of "You") -
Tags
Summary
You and your family are just enjoying a nice day at the park, when a life changing event happens that ruins everything.
You get taken away to a facility to be tested on...
Life doesn't feel as peaceful as it once did, you hated your new life.
"I wish I could just go into those story books I used to read..."
-
Tags
Summary
AO3 description: Long ago, two races ruled over Earth: Humans and Monsters.
One day, war broke out between the two races
…
And that war won’t rest for you.
(Fellswap Gold story with some elements from Canon/Classic Underfell. Content for routes outside of the Closure Route [see: Underfell’s new routes, Closure is Pacifist] is unlikely.)Series
- Part 2 of Fizzyverse [UNDERTALE]
-
Tags
Summary
There they stood, the Bad Sanses and the Star Sanses. Forced into a unknown location, unable to escape.
Looking at eachother as there was only one clue or note on the paper.
Every night on of them would hunt and try to kill the others.
And the goal was to survive until the GAME was over. -
Unavoidable Outcomes by Crystalight532
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
02 Nov 2025
Tags
Summary
Sans discovers the Multiverse, blames it on a bugged RESET. Humanity is curious on monster's abilities, wanting to see if they can weaponise them.