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Snowdin Adventures with the Skeletwins by Just_AliAnne261
Fandoms: Undertale (Video Game)
13 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!
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- Part 1 of Skeletwins
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What if the King Papyrus ending stuck?
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- Part 15 of Skeletwins Side Stories
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After playing undertale late at night and being sucked through your computer to that universe, you and your bone brigade have to figure out what it's like to live in a new world. And maybe try to get you home. If there's time.
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Papyrus decides to take Sans, Toriel and Frisk on a car ride!
Unfortunately, the motion didn't settle well for Sans.
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- Part 16 of Skeletwins Side Stories
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Taming Strays by prescriptionk9, skullscooper (prescriptionk9)
Fandoms: Undertale (Video Game)
03 Nov 2025
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Summary
error wasn't part of nightmare's gang in any meaningful way. he popped in now and then when their goals aligned, or when Night pulled strings to make sure that his compliance would benefit them both. bit at the end of the day, he ruled himself, and he liked it.
however, after having his skull all but smashed in, who else could he call?
alternatively : the bad sanses try to coax Error into their polycule like a stray cat
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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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"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 17 of Skeletwins Side Stories
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The Magnificent Sans' Guide to Serving Your New Evil Boss by luckyfinch
Fandoms: Undertale (Video Game)
22 Oct 2025
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Summary
Swap gets fed up one day and declares that he's going to go work for Nightmare instead.
Ink and Dream didn't think he was serious.
or: the one where Swap (in a last-ditch-effort to get away from Ink & Dream) turns to villainy!!!… unfortunately, his new evil friends seem to insist on making him do annoying things like “eat daily meals” or “sleep.”
[SLOW UPDATES]
Series
- Part 2 of Swap’s Magnificent Evil Guide
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Skeletwins Sans' diary.
(Note: I HIGHLY recommend reading the main Skeletwins story before reading this fic. Spoilers for Snowdin Adventures with the Skeletwins ahead.)
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- Part 4 of Skeletwins Side Stories
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Just a bunch of silly, fluffy one-shots featuring Sans and Papyrus being their best brotherly selves.
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- Part 9 of Skeletwins Side Stories
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Ink and Error have maintained a friendship through thick and thin. Despite the regular battles that occur between everyone, and the bloody arguments that occur with each other. Even though Ink struggles with the reality of Error carelessly destroying the things he adores, even though Error finds trouble understanding Ink half the time. They love one another, wholly, but how much they're willing to express it is debatable.
After a moment's thought, something clicked. Furious and curious, the two now have to work out an unfamiliar concept with an equally unfamiliar companion.
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Error makes blue a plushie of him but blue finds out that the plushie has more...special qualities...
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- Part 11 of A Berry Kinktober 2025
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A severed rope is hard to reconnect, a torn wire on the other hand..
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Ink does something in a fit of desperation that shifts the course of Multiverse as everyone knows it, and somehow drags Error along with him.
And The Creators are not that happy about it, to say the least.--
Updates on the 2nd of every month! -
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Maybe Ink will never love him, and maybe he's still sore from the rejection. maybe its giving him a cold,
but there's something thrilling about the notes that he's finding in the antivoid.
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Ink rejects Error, can his spirits be lifted by an overenthusiastic Sans who has a knack for baking and kicking ass?
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If you don’t heal your scars, you’ll bleed from people that didn’t hurt you by Estel_dreamer
Fandoms: Undertale (Video Game)
16 Sep 2025
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Cross learnt from a young age to not complain, to keep his head down, to do tasks without being asked to do them and not seek credit for them. He learnt from a young age how to manage other people’s emotions, to keep them happy because the alternative always ended in tears and pain.
Life with Nightmare and the gang is different. They don’t expect things from him, don’t wish him harm. But years of trauma cannot simply be forgotten. Habits that helped him survive don’t just go away overnight. He tries to keep it together, tries to go about his life as he always has. But the others are starting to notice and they know things cannot continue as they are.
Series
- Part 19 of Nightmare’s gang as a family drabbles
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Curiosity is weird. It can either be incredibly useful, or incredibly dangerous. Papyrus knows that all too well.
He knows his brother is smart. He's amazing at quantum physics! He's very good at gathering intel on people. And when Papyrus needs help, he knows he can always count on his brother to give him the best advice.
It's just that... sometimes...
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- Part 8 of Skeletwins Side Stories
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Frisk is the new guardian of time! Hooray! This comes with many burdens, and many new friends too. Frisk must traverse these confusing new powers and mysteries with the aid of Sans to make this AU better for everyone, and they have to quickly. The Angels are getting restless. You would not like them when they're mad.
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Artsy's UnderTale, DeltaRune, & AU Headcanons! by artsycloudysleepy
Fandoms: Undertale (Video Game)
29 Aug 2025
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Summary
This is not a fic, just a list of headcanons! Expect much autism and queerness to be poured into this lol :3
Will update when I remember to and at my own leisure!
(As of writing, there is only UnderTale AU content here - there WILL be base game + DR content too, but please be aware that currently there isn't any!)
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Stitched in Ink by LeviosaDab, MagykGremlin (LeviosaDab)
Fandoms: Undertale (Video Game)
29 Jul 2025
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Summary
...“just adding two and two—i’m a scientist, and you are dumpster diving. i think we could help each other.”
The skeleton just continued to stare, warily locked onto his lab coat instead of him as they stepped back.
...“just… give it a day or two?”You never knew what you might find in the dump. But out of everything he'd brought home for a project, Sci never expected a young homeless creature to be one of them.
Problem is, feral kids don't make for easy science experiments. Now Sci's stuck with Ink: a small, strange skeleton with a past neither of them know and a future they know even less.
It's going to be hard keeping them safe in their quest to fit their multiverse. -
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Summary
a self indulgent small multi chapter smut fic of error, blue, and nightmare
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Risen Up (or, Of Fallen Children and Mountain Kin) by paradoxpangolin
Fandoms: Undertale (Video Game)
03 Jun 2025
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Summary
The story ended when the barrier broke, but life didn't. Life just keeps on happening. Funny how that works.
For Frisk, that's a mixed bag. On the one hand, you got a Brand New Friends/Family/Whatever, two pseudosiblings who kind of like you for once, and you're free of the endless cycle of people breaking you apart as they try to "fix" you. On the other, tensions between humans and monsters are high and getting higher, and something drastic needs to change before the situation gets irreparably worse.
That something might just be a musical, created by all of monsterkind coming together to tell their own story. But, as always, nothing is as easy or as simple as it seems, and Frisk holds the keys to several doors they can't unlock. Bad things lie behind them. But if they stay closed, everything they've worked so hard to gain could melt away into dust.
!!(NOT ABANDONED, I'M JUST SLOW)!!