1 - 20 of 60,355 Works in Undertale (Video Game)
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I ran out of tag room, so it’s being split up! Hope you enjoy nonetheless!
Series
- Part 2 of Cactus’ Kinktober 2025
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Kinktober 2025 prompts featuring The Great Papyrus himself.
Starting in the order of days from where I start (Day 25) before working my way backwards after October ends.
- Language:
- English
- Words:
- 1,341
- Chapters:
- 1/31
- Hits:
- 0
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Nightmare can't hide it anymore... Killer remembers their first kiss and the next big step is on the way
Series
- Part 2 of Our Little Loves, For Good or For Bad
- Language:
- English
- Words:
- 3,229
- Chapters:
- 1/?
- Hits:
- 1
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Sans, in accumulated rage from all the tests, pushes Gaster off a platform in the core. Rather than in the original Handplates, Gaster falls onto another platform, dying almost instantly. Betrayal between brothers, angst, sadness, and possibly a crack in a seemingly unbreakable bond to follow. (If I finish this) the brothers will begin to learn about their mysterious captor and who he was, after he was gone.
This work has gotten many good beta read critiques, and may someday be finished.- Language:
- English
- Words:
- 231
- Chapters:
- 1/1
- Hits:
- 0
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finally worked out how to add images, so i can actually add doodles here now! wow!
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Frisk and Leo (the Bravery SOUL human) have been friends forever, since they were babies. Now, the two 10-year-old children are drunk, chubby and currently at the bottom of a mountain in an underground civilization of monsters...but a True Reset says that this will be a first for both of them, so it's up to two drunk kids to guide themselves back home - without dying, that is.
(DISCLAIMER: DUE TO LACK OF INFORMATION ON THE OTHER FALLEN HUMANS, MOST STUFF LISTED HERE ABOUT THE BRAVERY SOUL HUMAN, WHO I'M CALLING LEO, WILL BE MY PERSONAL INTERPRETATION. DO NOT TAKE ANYTHING LISTED HERE AS FACTUAL INFORMATION ON THE BRAVERY SOUL HUMAN).
CW: Drunk Children, Fantasy Violence, Partial Nudity (not shown or described), Minor Weight Gain Elements.
Series
- Part 1 of Undertale: Partners AU
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What do you think would go through your mind? If everything you had built, by the sacrifice of everything you wished you could be, was taken from you? Was desemated before your weary eyes. What would you be feeling? As you hear those words leave his dying breath, and he sinks to dust beneath your very claws?
“I'm sorry I wasn't the man you wanted me to be…”
old married OC couple angst lets gooo
Series
- Part 2 of Rowans's personal shit
- Part 1 of Ragnuk Shit
- Language:
- English
- Words:
- 1,083
- Chapters:
- 1/1
- Hits:
- 7
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The Multiverse is dying. The balance has been tipped too far and now it threatens to crash down around everyone. But Dream believes the answer to their survival lies with their newfound Destroyer.
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Noelle Becomes Brave by IllegalMeerkat
Fandoms: Deltarune (Video Game), Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
25 Oct 2025
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The world is on a collision course with the end of everything.
Noelle Holiday is attacked in Hometown while walking home, and after returning home a week later, she knows that something is wrong. Her mother isn't acting right, and there's something out in the woods around her house.
With all of her friends and family holding secrets, the Roaring looming overhead, and the knowledge that the world rests on her shoulders, Noelle forgoes her mental health to make a better tomorrow. She'll get stronger.
Whether her friends let her is another story.
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IT'S THAT TIME OF THE YEAR!
Kinktober time~!So yeh this is basically short drabbles of smut. Some will be longer, some will be shorter but I'm gonna try my best to make them juicy~
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UDY on the Surface by CommanderBullet
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game), Deltarune (Video Game)
25 Oct 2025
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It's been a few years since Monsters returned to the Surface and lots of things have changed... Accompany your favorite characters from Undertale, Undertale Yellow and Deltarune as they try to manage their everyday responsibilities and go through a few wacky adventures while at it in this slice-of-life crossover AU.
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Another Ending by Zekyn
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
25 Oct 2025
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Summary
What if one pivotal moment had gone differently? Chara and Asriel find themselves facing the aftermath of choices that could have ended them both.
- Language:
- English
- Words:
- 9,322
- Chapters:
- 1/1
- Hits:
- 6
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Ink has never been a good sleeper. He rolls around and sneaks out of bed and is constantly staring into space with wide eyelights, all while he should be sleeping like a normal monster. So, Error, being the good boyfriend he is, takes him to Sci to get meds. Little does he know, Ink is about to screw everything up and put him through the consequences.
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Dream, un prince de quinze ans.
Killer, un tueur de quinze ans.
Un amour dit interdit.! warning! âmes sensible s'abstenir, se ne sera pas un happy ending.
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Écrit pour le concours de AmiraAmie0 (wattpad)- Language:
- Français
- Words:
- 3,545
- Chapters:
- 4/4
- Hits:
- 23
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Top of the class, bottom of the heart by reincarnatedfrog
Fandoms: Undertale (Video Game)
25 Oct 2025
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Summary
Monsters have lived alongside humans for a decade now, and you’ve dedicated your studies to understanding them. But on the first day of your third semester, a scoreboard in the university’s new building throws you off balance—because the top name belongs to someone you’d have sworn wasn’t even trying to stand at the top.
Get to know a strange human with an even stranger family and friends, and experience chaos across both the surface and the underground in this little writeup of mine!
Story mostly exists cuz I am a Chara simp and there's not enough slow burn out there that gets heated later on ngl. -
The Darkness of Creation: Can't Be Erased by Mysterie
Fandoms: Undertale, Disney - Fandom, Marvel, Teenage Mutant Ninja Turtles, Cuphead - Fandom, Dick Tracy - Fandom, Halloween (Movies), The Legend of Spyro (Video Games 2006-2009), Spyro the Dragon (Video Games 1998-2005), Pokemon - Fandom, Deltarune, Bendy and the Ink Machine
25 Oct 2025
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Halloween gives rise to something the whole of Earth is not ready to face...
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Adventure Tale by Kaboom91
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game), Deltarune (Video Game), Adventure Time (Cartoon 2010)
25 Oct 2025
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After countless runs, something goes wrong, and now humans and monsters alike have been pulled into a strange new land with its own rules and its own dangers. Come Along With Me for the crossover nobody asked for, its ADVENTURE TALE!"
Series
- Part 1 of Adventure Tale Collection
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It Takes A Village by DiamondDeputy (EllaMayLowell)
Fandoms: Undertale Yellow (Master Sword Video Game), Undertale (Video Game)
25 Oct 2025
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All Clover wanted when they entered the Underground was to find the missing children. Instead, they found a legacy of pain and hostility that helps no one. They can’t be sure of what they should want.
All Clover wants now is to live peacefully with their friends, perhaps excluding the one that wanted to kill them. But she’s far from the only one: a human in the Underground is only good for their SOUL. They can’t be sure they’ll ever get what they want.
It only takes seven to free all of monsterkind. But in the meantime, the Royal Guard is on the hunt, Kanako’s status is still a mystery, and Clover’s absence is felt back on the Surface.
(Or: Clover lives AU, and the dynamics and conflicts that follow)
Series
- Part 3 of Ella-May's UTY Retelling Collection
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Diverging Paths - Start of HOPE by YellowSaga
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), Undertale (Video Game), Celeste (Video Game), Cuphead (Video Game), Shovel Knight, Hollow Knight (Video Games), Dead Cells (Video Game), Hyper Light Drifter, OneShot (Video Game), Five Nights at Freddy's, Friday Night Funkin' (Video Game), Indie Cross (Web Series), SCP Foundation, Battle For Dream Island (Web Series), Deltarune (Video Game), Persona Series, Sonic the Hedgehog - All Media Types
25 Oct 2025
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Summary
A fallen human
A fallen child
6 lost souls converge into one.
8 souls start the beginning of HOPEVigilantes rise in a place they should not be.
Rifts torn.
The Sun Lost.
But still they have HOPE.One echoes throughout the halls.
One Flower to rule them all.
The world is their plaything, but they will not fall.
The World Refused.
The World has HOPE.
(Hello everyone, this is YellowSaga, and thank you for reading or even just considering my fanfic, this is my first work so constructive criticism is appreciated and I will rewrite chapters if I have to, anyways, hope you enjoy and thanks again.)
Also I will try to update weekly or bi-weekly, but I can't make any promises, other than this definitely won't be abandoned, it will be on hiatus at worse.Also there may be major or minor spoilers for all the above fandoms and possibly others (I couldn’t fit all the characters) found in the notes chapters, you have been warned.
Series
- Part 1 of Diverging Paths - Series
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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.**