1 - 20 of 64,399 Works in Undertale (Video Game)
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Sans hates and struggles to live. And therapy isn't working
- Language:
- English
- Words:
- 1,615
- Chapters:
- 1/?
- Hits:
- 0
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Your Fear Is Tasty (Horror!Sans x Reader) by Cat_0967
Fandoms: Undertale (Video Game), Horrortale - Fandom
01 Jul 2026
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You fell into the underground and try to get out of here alive but things doesn't go the way you or anyone expected, fortunately you have the greatest guide to help you.
This fanfic is a Horror!sans x reader although I hope I can turn it into a slowburn. (Maybe not, we’ll see :P)
Also I wanted to start this mainly because of a friend's request but also because there's not much of fanfics on horror recently... lol
Enjoy!
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Black Christmas by RickyTastic132
Fandoms: Deltarune (Video Game), Undertale (Video Game)
01 Jul 2026
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Summary
“December wasn’t really the greatest person”
A character analysis of Dess Holiday, and the story from her perspective. Follow the Roaring Knight’s perspective from the events before, after and during chapter 1 - 5
You know things about her, but you don’t know HER
Find out who she is, what she is to the others, and what it means to know December Holiday
- Language:
- English
- Words:
- 1,906
- Chapters:
- 1/?
- Bookmarks:
- 1
- Hits:
- 22
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The Last December I Saw Dess by krissdagirl for Me Myself & I
Fandoms: Undertale (Video Game), Deltarune (Video Game)
01 Jul 2026
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Summary
Snow.
Beautiful.
Incredibly powerful, yet incredibly delicate….
Cold enough to cut you like a knife, yet… also posses the ability to keep you warm and safe, to make you smile and laugh…
A phenomenon that could kill you, or save your life.
Kinda crazy, right?
Strong enough to make the world stop in its tracks, but the moment you blink, it could be gone.
She, could be gone….
December meant so much to all of us…. It’s only fitting that the person who kept us all together is also what tore us apart…..
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Horror comes across their pet human who has apparently been barred from wearing clothes. The human doesn't really seem to mind, but he takes matters into his own hands anyway.
Series
- Language:
- English
- Words:
- 2,184
- Chapters:
- 1/1
- Kudos:
- 3
- Hits:
- 18
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Summary
While his pet human is sitting in his room playing its video game, Nightmare needs to let off some steam, so he decides to put it to good use.
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Dream and Nightmare lived mundane lives. Dream was happy with the life they lived, he had friends, his brother, everyone loved him...his life was perfect.
Nightmare was jealous. who wouldn't be? His brother's life was perfect. Just once he wanted to feel the same joy his brother felt everyday.
One night, giving into the childish urge, he made a wish upon a star... for a friend...childish as it was he just wanted it to come true... he just wanted a friend...
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Foundation Built Upon Desolate Walls by CherifulBerry for JustALittleAuthor
Fandoms: Undertale (Video Game)
01 Jul 2026
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A point of view from killer, meeting nightmare just after he was turned. Their tales exchanged and their fates intertwined, Nightmare insists they can find a new home, a better home, together. Killer decides to at least humor him, and see where this road goes.
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Sans and Papyrus both come out to each other as Aroace
- Language:
- English
- Words:
- 674
- Chapters:
- 1/1
- Kudos:
- 1
- Hits:
- 10
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Bound by night, Born of light by KeyLimeLizard
Fandoms: Undertale (Video Game), Undertale AU - Fandom
01 Jul 2026
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Summary
If you blacked out for a week or two after taking a projectile to the head, you'd probably be confused. Fair enough.
But come on—this? This is just excessive.
Waking up in the middle of an unfamiliar room, head pounding like it’s trying to cave in on itself, would rattle anyone. But it’s not just the room that’s unfamiliar.
Everything is.
No memories. No clues. Nothing.
Except… one thing.
your name.
Y/N. Y/N L/N.
And right now, that name is your only lifeline—something to cling to while you flounder through the wreckage of a life you no longer remember.
Now if only you could recall this elusive husband everyone supposedly insists you have....
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Who Might You Be? by HyperPrincess
Fandoms: Undertale (Video Game), Deltarune (Video Game)
01 Jul 2026
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Summary
contains spoilers for Deltarune Chapter 5.
basically Flowey hates Flowery after Flowery dies.
...that's literally the entire fic.Series
- Part 1 of Actual UTDR Fics
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[ERROR: This_Bed_is_Just_Right.docx NOT FOUND] by TheHenbaneCourt
Fandoms: Undertale (Video Game)
01 Jul 2026
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Summary
[ERROR: DATA CORRUPTED]
[OVERWRITE EXISTING FILE? [Y]/N]
[PLEASE WAIT...]You always knew your past wouldn't stay buried.
In another life, you might have dreamed of living in the peaceful countryside, tending to the fields and nurturing your community. Maybe even find love along the way, if you were lucky.
But some things just aren't meant to be.
Fleeing from an abusive home doesn't leave room for fairy tales. And waking up in an all-too familiar hospital, after years of freedom away from your controlling parents, does not a princess make. Something cruel and hungry is calling out to you at night, when the plains are quiet.
And finally…
One night, you answer.
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Summary
Killer leaves a cute and sexy present on Nightmare’s bed, opening himself up to a world of trouble in the process :)
Series
- Part 3 of Bad Sans Poly Drabbles
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Woventale - Shorts by Op7
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game), Deltarune (Video Game), Alternate - Fandom
01 Jul 2026
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Summary
In Woventale, the Underground is a patchwork of strange cities and altered destinies, where familiar faces walk unfamiliar paths. Across the stitched landscapes of Snowfall, Sea Shore, Smokestack, and the Forest Ruins, lives intersect in quiet, calm, or sometimes dangerous, and unexpected ways.
This is the world woven by 'Watchers'. Like you. So why not stay awhile, and listen?
This - is not a grand story. This is a collection of short stories, moments, scenes and encounters.
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Summary
Killer convinces Cross to do some training in the dungeon.
Knowing Killer, Cross should've known that training wasn't going to happen.
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Coming Home to You by c00lsk3l3t0n95
Fandoms: Undertale (Video Game), Deltarune (Video Game)
01 Jul 2026
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Summary
Waking up in a brand new home, Tenna truly couldn’t ask for more. Well. Maybe just a teensy bit more. He just wants to be with his new Lightners. By Lightners, he means Lightner. By Lightner, he means Papyrus.
But, is there more to his new companion than meets the eye?
Series
- Part 3 of Papyrus
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Summary
nie wiem kurwa jak to pisze to czuję się jakbym był po jakiś ostrych narkotykach 👨🏼❤️💋👨🏿🤠
prosze nie brać z tej książki nic na serio 🙁
mogą tu występować jakbyś randomowi ludzie który w realu nawet nie są ze sobą powiązani 😮😳👨🏼❤️💋👨🏿
ogulnie to jakieś jebniete jets to publikowanie książek na ao3 💀🙁- Language:
- Polski
- Words:
- 3,144
- Chapters:
- 4/4
- Hits:
- 6
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Summary
What if instead of Mad Mew Mew
Ralsei was the secret boss..
Being controlled by Flowey?In this AU Ralsei starts losing control of his emotions and powers. Afraid of what to do he goes on a walk
And meets a friend.All he has to do is listen to this new friend and he can change their fates.
He needs this -
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Ink really, really, really hates being emotionless. It's rarely a problem for him, though.
Until it is.
Luckily for him, Nightmare can give him what he wants.
Unluckily for him, Nightmare has his own agenda in mind.
When Ink gets kidnapped by Nightmare, he doesn't expect much. Imprisonment, torture, maybe some interrogation?
He doesn't expect to join his enemy. -
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Summary
Sans experiences a corn maze the first time with Frisk.
Series
- Part 4 of Flufftober 2023