1 - 20 of 60,479 Works in Undertale (Video Game)
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A child falls down a hole, meets a talking flower, and is immediately thrown into chaos. Expect panic, existential dread, and far too many dogs.
That's what any normal person expects of Undertale. Hell, the game is 10 years old at this point, I'm pretty sure I'm not the first person to go for the "What if Frisk but the human can talk and is a sarcastic little shit" route. But, oh well. At least MY AU has a completely new type of SOUL which will NOT be explained in the first chapters because I like edging my audience. No, not in that way, you freaks.- Language:
- English
- Words:
- 1,057
- Chapters:
- 2/?
- Hits:
- 6
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Summary
Here we are again! Another series of Undertale one-shots following the Fictober prompts and featuring the skeleton brothers as love interests to either my nameless or named girlies.
Just like the past two years, if you'd like any of these to be turned into fics, then please let me know in the comments! If enough people show they're interested, then it'll be added to my list of future fanfics! Five requests are what's needed for them to be added.
And if you choose to wait till the end of the month to read, that's okay! Requests can be made up until November 7th, when I post the list of the lucky winners!
Hope you all enjoy!
Series
- Part 3 of Fictober
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Where Do Monster Souls Go When They Die? by Just_AliAnne261
Fandoms: Undertale (Video Game)
01 Nov 2025
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Summary
"Papyrus felt... strange. Softer. Lighter than ever before.
He could've sworn he was just in his bedroom a minute ago. He remembered his old, cold bones curled up under the sheets, his soul crying out with deep, painful loneliness. He's pretty sure he just fell asleep in that bed with tears running down his face.
He's never been the same since Sans passed away two years ago.
But now he's on a fluffy white cloud, high in the sky. At least, that's where he thinks he is."
Series
- Part 12 of Skeletwins Side Stories
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Grimdarktale by GreatAndMightyKevin
Fandoms: Warhammer 40.000, Warhammer 40k (Novels) - Various Authors, Undertale (Video Game)
01 Nov 2025
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Summary
After erasing all of reality, becomig a godlike being, and eventually growing bored with ruling over an empty nothingness for all eternity, Chara suddenly finds himself sent into the grim darkness of the 41st millenium where there is only war.
In a universe teeming with unimagineable horrors his pechent for mass murder suddenly becomes a whole lot more useful.
Note: Looking for a beta-reader to help fix any mistakes I overlooked.
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When ghosts haunts the past of human and monster alike, the lingering spirits of two band together to piece together a past lost, and a WISH forgotten.
This is a reimagining of the Undertale AU called StoryShift made by Voltra. You can find the original/reboot here:
https://ut-storyshift.tumblr.com/post/181157867174/ut-storyshift-reboot-official-part-one-and-only/amp
Series
- Part 1 of A Ghost Story
- Language:
- English
- Words:
- 20,806
- Chapters:
- 5/?
- Hits:
- 34
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A Simple Hallow's Eve by SomeoneNotReallyNoteworthy
Fandoms: Undertale Yellow (Master Sword Video Game)
01 Nov 2025
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Summary
It's Halloween! But Clover can't celebrate. Sometimes things may not work out how they thought.
- Language:
- English
- Words:
- 1,495
- Chapters:
- 1/1
- Kudos:
- 4
- Hits:
- 17
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Snowdin Adventures with the Skeletwins by Just_AliAnne261
Fandoms: Undertale (Video Game)
01 Nov 2025
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Summary
"You want to know what to do here in Snowdin? Grillby's has food, and the library has information... If you're tired, you can take a nap at the inn. It's right next door - my sister owns it.
"And if you're bored, you can sit outside and watch those wacky skeletons do their thing. There's two of them... Brothers, I think. They just showed up one day and... asserted themselves. The town has gotten a lot more interesting since then."
The daily lives of wacky skeleton brothers Sans and Papyrus. Watch and read as they get into all sorts of wacky adventures, cause mayhem, and learn life lessons along the way!
Series
- Part 1 of Skeletwins
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Summary
The thing about soulmates is, no matter what pries them apart, they always...always find a way back together
Chapters 1-3: Prologue
Chapters 4+: Main Story
*This is a rewrite of I Have The Power of Gaster AND Anime On My Side. Same concept, with a bit of a serious feel.*
**Please be aware that this is not like my usual reader-inserts!! This story is in 3rd person pov, very vague description of a female reader. Unnamed (Pet names only). No use of y/n, y/e/c etc.**
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Just some short stories. Most of them are based off actually real stories I've heard before, others, are just from my mind.
I'd say their pretty good. (but no promises)
They're about Undertale AU ships. You may request a ship or even story ideas.
Please read. Or don't. I don't care. -
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Summary
Cross finds himself responsible for the death of his universe. After years in the white unending void, his tears summon Nightmare, who brings him back to the Castle.
It’s the aftermath of a more brutal XTale au, where Cross deals with PTSD and OCD, while trying to make a place for himself in the gang. It’s difficult, when you make mistakes left and right.
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Basically, I realized there's a lot to keep track of over in The Importance Of Proper Folding Technique. I've got a bunch of charts and reminders in the Google Doc. So charts that might be helpful to following along, as well as any extra materials I feel like publishing, will go over here.
Series
- Part 2 of Specifically Skeleton Smooching
- Language:
- English
- Words:
- 143
- Chapters:
- 1/1
- Kudos:
- 2
- Hits:
- 12
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Summary
We're back with another year of Inkwhumptobertale!
And this year, we have another twist: another list! That's right: every day, I'll be facing the challenge of eight different unrelated prompts, and I'll have to do my best to cram them all into the story, somehow. Admittedly, there is a low chance of me actually doing that, but I am obligated to use at least three prompts each day, and I'll add more if possible. I'd like to do at least one day fitting all eight prompts into the story at some point in the month, though. So..prepare for chaos!
These characters are not mine!
Series
- Part 4 of Writing Prompts
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The butcher (Short oneshot) by Kitteninasuit
Fandoms: Undertale (Video Game), Horrortale - Fandom
01 Nov 2025
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Summary
The short story of horrortale sans AKA the underground’s butcher- reluctantly dragging himself to kill the next fallen human who managed to befriend both him and his brother.
- Language:
- English
- Words:
- 767
- Chapters:
- 1/1
- Hits:
- 3
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Summary
(Y/N) doesn’t remember much. Not since they awoke midway up Mt. Ebbott, having mysteriously collapsed onto the grassy terrain.
Thankfully a tall skeleton passing by spotted them and vowed to helped them recover, as far fetched and impossible as it seemed. After all….
Monsters didn’t exist…
Did they?(A classic undertale Sans and Papyrus AU x reader fic with a Twist ;P)
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“Do you, uh, need something..?”
.
.
.
“You can see me?!”
Error just wants to be alone, Ink just wants to be with someone. But make it spooky and gay. -
Seasons Don't Fear The Reaper (Nor Do The Wind, The Sun Or The Rain) by Uncreative_City
Fandoms: Undertale (Video Game)
31 Oct 2025
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Summary
Lotus and their partners engaging in some seasonal activities that definitely don't involve going into the haunted woods.
- Language:
- English
- Words:
- 778
- Chapters:
- 1/1
- Hits:
- 9
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Putting That TV in Situations. by RossIsF4llen
Fandoms: Deltarune (Video Game), Undertale (Video Game)
01 Nov 2025
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Summary
I’ve written a few Tenna porn fanfics. This is them.
The first is Mettatenna. -
Fool's Lead by Smutgoblin
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
01 Nov 2025
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Summary
Based on Shocking22's Fool's Gold, This takes place in a similar scenario, but the clover put into the decaying body, is the soul of the only clover who escaped the underground. They want vengeance, justice for the fallen humans, but in this world with the current human ambassador, there is no justice. Not yet.
- Language:
- English
- Words:
- 1,970
- Chapters:
- 1/1
- Kudos:
- 4
- Hits:
- 49
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Summary
"Was it foolishness?
"Was it fate?
"Or was it... because you...?"- Language:
- English
- Words:
- 1,108
- Chapters:
- 1/1
- Kudos:
- 1
- Hits:
- 9
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Summary
KillerVlogs uploaded a new video!
Tape #00: Calling Creepy Numbers
"A company? A friend? Simply someone to talk to. I've been... lonely as of late." The line went silent for a moment and before Killer could answer, the voice asked. "Are you perhaps... interested?"
KillerVlogs is currently live!
Now Streaming: Help Me
"How long are you going to keep me here?"
The camera positioned on uneven surface. A broken leg propped on one of the small chairs and beyond that, an easel was positioned along with a canvas effectively blocking the figure currently painting the holder of the device. The soft light of the morning from the windows betrayed the air of discomfort. The comments of the live stream pour like heavy rain.
'GET OUT!'
'RUN!'
'Is this true, like no ARG shit? Somebody call the cops!'
The figure behind the canvas paused from dabbing the brush delicately on the image. Killer just know that his host was sporting a sweet smile as he said:
"As long as it takes."