1 - 20 of 42,265 Works in Sans (Undertale)
Navigation
Listing Works
-
Pure vanilla cookie falls into the underground instead of frisk by Phroggy1031
Fandoms: Undertale (Video Game), Cookie Run (Video Game)
22 Feb 2026
Tags
Summary
I had this idea in art class I think and thought it would be funny for a fanfic :3
-
Tags
Summary
This is complete crack
I regret nothing
-
Tails and Alphys love story by RisingTails
Fandoms: Sonic the Hedgehog - All Media Types, Undertale (Video Game)
22 Feb 2026
Tags
Summary
Tails and Alphys start to notice something between them
-
Tags
Summary
“Throw in the monster and I’ll look the other way.”
A dystopian tale of monster slavery, resistance, and the tangled bond between Red and you: his mysterious new owner.
-
Tags
Summary
Dream and Nightmare have a peaceful life in the haven they call home, but what happens when. Nightmare meets someone new?
-
Tags
Summary
Nightmare wasn't too upset at the announcement of his betrothal. He had excepted long ago he would be wed, would take another at his arm to rule. He hadn't expected it to come so soon.
He has no doubt the suitors his mother will have picked out will be lovely, but not to his taste. So he is much surprised when he finds each of them have an energy he is drawn to.
And as it turns out, perhaps the biggest problem isn't picking the best of the worst, but picking between four men that he loves.
Or, put simply, its my betrothal au!
-
Tags
Summary
Anyone that watches porn regularly has a favorite actor. Someone that they keep coming back to and that always manages to turn their breath short and make their heart slam within their chest no matter how often they watch or hear them.
And for you, that was ‘Big Red’.
-
Tags
Summary
You watch them suggest names and argue with each other as you stand there dutifully like a newly-adopted dog. Rus sidles up close to you and looms over you like a hanging specter. His smile does not look friendly.
“How about..Snowy,” He suggests, his grin widening at the twitching grimace on your face.
How to survive a blizzard and nonconsensual teleportation to a dilapidated sci-fi basement.
-
Tags
Summary
In 2015, Toby Fox discovered the Multiverse. By 2040, mankind reveres the AU characters, treating most like celebrities and some like gods. Naturally, unethical experiments ensue, and some humans are turned into powerful monsters for the sake of researching without disrupting timelines. They may fight to stop the cycle, but some will not come out the same as they once were.
This work was remade in protest against current censorship laws around the world after the deletion of the original copy of SDAU off of Google Docs.
NEW FEATURES:
-New content and lore
-Improved writing
-Third-person perspective for ease of POV changes
-Unabashed Dreammare subplot
-Trans plotlines for Lamia and Scarlet; otherkin plotlines for Wren and Adwin
-The villains are worse somehow
-Nearly everything has been rewritten! -
The Lost Fire/Asgore fic by Soul_File404
Fandoms: Deltarune (Video Game), Undertale (Video Game)
22 Feb 2026
Tags
Summary
Asgore from deltarune is remembering memories of Undertale
-
Tags
Summary
The Jokus family ruled the kingdom with divine power and perfect appearances. Their twin sons were blessed by the gods — Dream, adored by the people as the Prince of Positivity, and Nightmare, forgotten in his shadow.
Jealousy reshaped Nightmare into something darker, while Dream remained the kingdom’s symbol of hope.
But Dream carried a secret of his own.
He loved his royal guard.
Cross, the commander’s son, had grown beside him, trained beside him, and sworn to protect him. What began as childhood laughter turned into something dangerous — something they were never allowed to name.
A prince was not meant to love a guard.
A guard was not meant to love a prince.
Their bond became a quiet rebellion in a kingdom built on rules, bloodlines, and arranged futures. While Nightmare ruled the council with shadows, Dream ruled his heart with a love he could never claim.
And in a kingdom where reputation was everything…
Their love was the most dangerous thing of all.
-
Tags
Summary
A retelling of how the Bad Sans, under Nightmare, came to be. A different tale and way of how they gathered, bonded, and began to work together.
Join Nightmare as he fights his past and determines who he is as a person on his own after meeting one, unexpectedly dangerous, individual that changed his perspective and shifts how he determines to live his...no, their life from then on.
-
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
UTMV INCORRECT QUOTES YIPPEEE!!!!!!!
Chapter 160
Sci: Helpful grammar tip! Farther is for physical distance, further is for metaphorical distance, and father is for emotional distance!
Fell: Who hurt you?
Sci: My father did you not hear what I said -
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
22 Feb 2026
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
They say old habits die hard, Killer agrees, he never stops trying something new.
Series
- Part 1 of The ABCs of chiaroscuro
-
I'm Not a Stalker! by MadameJuliaKaNeko
Fandoms: Undertale (Video Game), Underswap (Alternate Universe)
22 Feb 2026
Tags
Summary
Julia is an introverted woman in her 30s that attends her local college and for the most part, enjoys just barely cruising by unnoticed. But things change when she notices a certain monster and experiences feelings she's never had... For a real person. This person she has these feelings for just so happens to be Sans, a well-known popular skeleton monster who is always followed by his little "entourage" of fan-girls.
Always being the self-deprecating pessimist, Julia realizes she needs to just leave these newfound feelings unrequited and squash them down deep where they can never see the light of day and avoid Sans at all costs.Good! Problem solved.
...Or it would be, if she didn't drop her book that one day. She really should have not been so lazy about zipping up her backpack.
-
Tags
Summary
(New summary, i've also edited old chapters and added a new one)
To you, memory is a fickle concept.
A flowing river, in most cases. Slowly reaching new grounds. In some areas, the old stream grows thin, while in others, the water rapids reach incredible speeds.
That’s how you assume it is for others anyway.
While yours you imagine to be a pond. Fresh water newly formed from rain. No direction. No purpose. Only the clouds above know the truth. They know where your water came from. And sometimes, the water within reacts as if it remembers the riverbed once traveled…
At least, you would think so. If you didn't begin your sudden life and memories face planted in snow. Your only clue to who or where you are is a body wracked with pain (and injury), feeling of impending doom and ghostly sensation of deja vu. Oh! And the confusing knowledge of knowing a certain skeleton’s name, much to his displeasure.
OR
A story in which you meet wacky characters along the way of your universal travels. You’ll make enemies, you’ll make friends, maybe even….. more?
Though the worst part is that you can't stay still for long. Something is coming for you, and it won't stop until you’re dead. -
Tags
Summary
Trading her freedom away for the safety of another, this book loving woman finds herself in a strange castle, guarded by the castle’s inhabitants. Unbeknownst to her, these four have another fate in mind for her… they’d agreed to her deal in hopes that she could break their master’s "curse".
With a heart as firmly guarded as their realm, the dark beast that reigns over the castle is resigned to a future alone and unloved. With a job as nasty as his self image, there’s no way this kind stranger could ever care to look upon him… right? Can a caring hand light a fire in this realm of permanent midnight?
A tale as old as time, told in a new way.
-
Tags
Summary
Retail... This line of work that is an absolute nightmare where you get paid (not enough) for customers to yell at you. Yay. Julia wants to find a new line of work so badly, but makes the most of it with her current job as a cashier at a local grocery chain. One day, after she clocked out early from work to get some dinner shopping done, there was a loud commotion coming from one of the aisles. It looked like a bunch of skeleton monsters arguing about dinner plans.
FuckThisShitImOut.GIF
...Nope. Julia did not have the spoons for this. She clocked out early for good reason. Maybe if she's really quiet about it, she could just sneak past them.
"YOU THERE! HUMAN!"
…Dammit. Okay, maybe if you just help them out with this, just this one time, you'll never have to see them again. Right? Right…?
ACTION! DRAMA! ROMANCE! SEXUAL TENSION!
Who shall win the human’s affection?!
The dashing skeleton with the boyish charm? THE MAGNIFICENT BLUEBERRY?!
Or...
The edgy prince who commands with an iron fist? THE MALEVOLENT RASPBERRY?!
Find out now on our new series...
BERRY WARS - REDUX!!!
Series
- Part 1 of Redux Series