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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
02 Nov 2025
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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.
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Slay (SAVE) the Princess by CrossoverAU
Fandoms: Undertale (Video Game), Slay the Princess (Visual Novel)
01 Nov 2025
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You are in a basement in a cabin.
That cabin is in the woods.
In the woods, on his way, is a skeleton
He is coming to kill you.
Will you let him?
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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.**
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(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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You save a skeleton monster from dusting in an alleyway, good for you. Unfortunately tho, he might be a tiny bit smitten and a real pain in the ass
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✨
He skidded to an unsteady halt as he finally got a close look at the two passed out Skeletons.“What the fuck?”
Blue didn’t swear often, but this? This definitely merited it.
✨Error and Ink are caught in a …little… accident and now everyone else is left to deal with the aftermath.
Series
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Undertale Kinktober 2025 hypnosis edition by Chris_ghosty77
Fandoms: Undertale (Video Game)
31 Oct 2025
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New kinktober! One chapter a day for the entire month!!! With a list I made myself, very excited to show everything I've written.
Just like the other ones every chapter contains some form of hypnosis/mind control/brainwashing. I'll do my best to tag but i can't tag absolutely everything so look at the warnings at each chapter or in the table of contents.Series
- Part 14 of Undertail hypnosis series
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Monsters have come to the surface, and with that a lot of probelms have been caused, so maybe a marriage between two people from the two races might help?
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You are a shapeshifter with the rare ability to turn into an orange fox—a secret you’ve kept hidden, knowing humanity once hunted your kind. Living near Ebott, you slip into the night to run free, though the fear of discovery always lingers. Meanwhile, Sans and Papyrus have unknowingly welcomed a manipulative woman named Kora into their lives.
Behind her sweet facade, Kora is a gold digger using the brothers for wealth, status, and comfort, willing to lie, fake affection, or even blackmail them if needed.Eventually Kora stumbles across your apartments terrible condition, deciding to become “friends” with you and inviting you to stay in the mansion with her and her apparent mates. It started off fine, until she began to spread lies— rumors.. Even blaming you for mistakes, stealing. And god who knows what else.
Maybe you can help these skeletons see past whatever game she’s playing at? (Anti-Harem, That’ll switch into a actual harem..)
As well as machine chaos.
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What was supposed to be a harmless night of distraction turns into something far darker when Regina, still nursing the scars of a love she can’t let go of, finds a mysterious skeleton stumbling into her hotel room. In the heart of The Velvet Wing. a club known for its secrets and sin. Her quiet attempt at healing spirals into chaos.
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Welp. Here we are. I'm doing this trope because I wanted to put my own take on it. There's a lot of skeletons and there's only one you. At least the only other human in the house is only rooting for you.
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You are on death's bed, there is no denying it at this point. Your good friend listened to you rave about an upcoming otome game you have been desperate to play since you've heard of it's creation. Only to sadden when your prognosis would keep you from seeing it in your lifetime. Well this good friend manages to get you a copy. So who would have thought that when you eventually passed on, you'd wake up as a healthy you? With goat ears, nubby horns, and a cute fluffy tail? Also a barrage of skeletons waiting on you hand and foot, calling you their queen... After playing many routes, there is one thing you are sure of... To make sure Black doesn't kill you like he does in the game... yet you don't seem to understand the stark contrast of yourself vs the queen as the skeletons do... and if you aren't careful? Black and the others will fall head over heels for you.
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You are a college student that just want to get yourself together, get a degree and make money enough to live alone in a cozy flat. But what should you do when you struggel with studies and different jobs while sharing a life with skeletons whom seem to don't like you?
Determination won't be enough to keep living in this hell. And a friend of yours make sure you remember that everyday.Now the breaking news:
- I love comments
- No beta reader
- English is not my mother language
- Long time until next update
- I am as bad as Asgore to name and nickname the characters -
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A young Papyrus from another AU has found himself in the original Undertale universe. He meets the original Sans and his brother Papyrus-- (wait what-) and other versions of them as well who had been there for a while. The machine Sans had given up working on malfunctioned at somepoint, bringing versions of himself and his brother randomly. Now this version of Papyrus was here too.
- Language:
- English
- Words:
- 589
- Chapters:
- 2/?
- Hits:
- 31
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Running through that forest you felt relived
No more fighting no more rings
No more experiments
No more cages
And most importantly your bitty where with you
Wait…are those…more skeletons!?P.S. I edited the first chapters rearead them please!
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In a world where it collapses without you by me_paina for Kamisori
Fandoms: Undertale (Video Game)
11 Oct 2025
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(This can be read as a standalone, you don't have to read Zombietale to understand.) (But still!!! go check it out.)
Life hates me, and so that's why I hate life back. Some people will say it's just satisfaction to do so, or some sort of mentality of: you hate me, I'll hate you back.
But no.
Not for me.
For me, it's the line between life and death. A rule I must follow because...
Nothing will ever go right for me, no matter how evil or heroic I be.
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Delta is trapped by a facility that promises to make a cure. Spoiler alert: They didn't. Delta decided to escaped for good, only to meet skeletons three years later.
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Check out the first chapter for background information
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Hello! So you know me by now. If ya haven't already I highly recommend reading Kamisori's story Zombietale. Even if the story and plots are completely different maybe you can get some sense of (a few) of the character's personalities.Zombietale is a really good fic! I love it!
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12/? - First chapter doesn't count(Zombietale belongs to Kamisori)
(Writing belongs to me (Me Paina))
(Drawing belongs to me (Me Paina))
(Undertale belongs to Toby Fox) -
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[Y/N] [L/N] is a powerful mage with a bloodline well-known throughout the ages and her family have always been celebrated. They, however, despise how their bloodline trapped monsters beneath the ground. But, that is for another day. In not being able to afford basic accommodation for university, they had to rely on an old (and terrible) friend named Bethany. For some reason, most of Bethany's skeleton mates despise [Y/N] but why is that? Apart from the fact she is a mage?
Just because she has a kindness soul, it doesn't mean she will stand for their bullshit. -
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Vi is all alone for the night and keeps thinking about Cash leaving cigarette burns on his pretty neck. Noticing a unattended carton in Cash's room, he knows exactly how to spend his night.
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Razz, a homeless teenager, gets grabbed one rainy, freezing night. Who are they? And what will they do to him?
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The bad Sanses respected their leader.
The god of Negativity was a fair and strategic boss. He provided shelter and food, ensured security and treated their wounds with something close to care.
What will his subordinates do, when their mighty Boss falters? When he's the one in need of care and protection?Nightmare's 'health' dips after a close call with an arrow of positivity. Nightmare would do it all again if it meant ensuring the safety of his boys.
Angst and Fluff! I know this fandom is sort of dead, but I still nonetheless will write this! Feel free to suggest crazy things, or even separate fics!