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The 'Reader' character is named during the course of the fic, utilizing some of the thematic elements of the game itself. She is actually an OC, so please take that into consideration before reading.
Frisk is your child, the result of a teen pregnancy, but they've always been told that you're their older sister. In an effort to get away from your own abusive mother, the two of you end up falling into the Underground, where Sans is startled by this abrupt change in what had become a predictable pattern of events. Maybe your presence is what is needed to stop the endless cycle of Resets.
After many struggles, both internal and external, you and your found family reach the surface, only to face even more difficulties from the society you weren't sure you'd ever see again. You meet new friends and encounter people from your past, though for good or ill, you're not sure. Sometimes it's difficult to tell kindness from cunning.
ACT One: (The Underground) Chapters 1-70 --- 171,021 Words
ACT Two: (The Surface) Chapters 71-180 --- 303,988 Words
ACT Three: (The Font) Chapters 181-???(All smut chapters include warnings. Current number: 9)
- Language:
- English
- Words:
- 560,481
- Chapters:
- 209/209
- Collections:
- 4
- Comments:
- 19,442
- Kudos:
- 11,701
- Bookmarks:
- 1,116
- Hits:
- 361,655
Bookmarked by SIeeper
23 Jun 2026
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Every ten years, the Fey gather a great many humans who'd begged to make a deal in a mushroom circle, and bring them to their realm. Why? Entertainment, of course! The Fey Games are a spectacle for the fair folk, where humans must venture across the dangerous and magical lands in order to make it to the capitol. Only one will make it there first, and only that lucky or resourceful human will be granted their heart's desire.
And the rest? Well. Those losers are lucky enough to become toys for the faerie willing to pay the most.
So watch the contenders, place your bets, and prepare your jewel purse for when your favorite gets put on auction, because it's time for the Fey Games!
- Language:
- English
- Words:
- 7,531
- Chapters:
- 2/?
- Collections:
- 1
- Comments:
- 1
- Kudos:
- 54
- Bookmarks:
- 9
- Hits:
- 2,571
Bookmarked by SIeeper
27 Apr 2026
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If someone had told you that you would be a housekeeper to a skeleton in the future, laughing in their face would've been the least you would've done.
But stranger things have happened.
Like the fact that two more skeletons showed up and threatened to ruin the peaceful routine you had settled into.
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The Knocker learns that the object of his affections is just as unhinged as he is, if not more. But you both end up getting exactly what you want, in the end.
Bookmarked by SIeeper
14 Feb 2026
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You have the most dangerous animal in your world at your beck and call, sleeping in your bed and eating from the palm of your hand. All that's left to do now is properly train him.
Bookmarked by SIeeper
14 Feb 2026
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Knocker got a bit jealous... gulp
Bookmarked by SIeeper
14 Feb 2026
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You were given a simple task: document the anomalies of this world. Entities that were never meant to be seen, heard, or remembered.
So you journal. You map the woods. You sleep in the caves, in the woods and abandoned mines, chasing whispers and silhouettes that vanish when stared at too long. Along the way, you encounter things you can't explain.
A man and a woman with glowing white eyes watching from afar. A knock that comes every night no matter where you hide. Claws scraping just outside your shelter, and creatures that linger deep within the dark, forgotten tunnels beneath the world.
What you don't realize is that you aren't just observing them. Some of them have noticed you.
As days blur into nights, their curiosity sharpens into something darker. They linger longer. They come closer. You're risking your life, despite never meaning to, just to understand what they are. And they seem to want the same from you.
They want to see how far you'll go. How long you'll last. And what you'll become when your mind finally starts to break.
[On Hold]
Bookmarked by SIeeper
10 Feb 2026
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You are invited to a Halloween party in a mysterious house, promising a night full of surprises. Are you ready for this adventure?
Series
- Part 4 of Kinktober 2024 (Monster Smut)
Bookmarked by SIeeper
06 Feb 2026
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Dreamscape | On Hiatus by mellybabbles
Fandoms: Undertale, Undertale (Video Game), Dreamtale - Fandom, Swapfell - Fandom, ____Tale(InkTale), Outertale - Fandom, Dusttale - Fandom
01 Aug 2025
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Monsters surfaced when you were just a kid, and the fallout took a long time to fully unravel and smooth over.
Now, 15 years later, you’ve found yourself in deep sh*t due to past losses and toxic family circumstances. Sometimes you let yourself have the will to wish that somebody would come save you from this monotone downward spiral of the fable that was called life.
At one of your lowest points, somebody does.
Multiple somebodys. Or should you say, multiple some-no-bodies?
SECTOR 1: GUARDIANS. Chpt 1-16.
SECTOR 2: CHANGE. Chpt 17-23
SECTOR 3: FEELINGS Chpt 24-34
SECTOR 4: DISSENT Chpt 35-???
(Updated Summary 8/19/23)
Indefinite hiatus - 6/12/26 -
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Summary
It's rumored that the monsters living on the other side of the city grew feral in their isolation underground... But none of that seems true to you, so you decide to visit Downtown anyway. Unfortunately, just like with humans, a few dangerous groups do exist, and your encounter with one lands you in the care of Dr. W.D. Gaster. To avoid political issues, you're secretly kept in his care for your entire recovery process, during which some interesting things come to light. For one, your doctor is a huge nerd, just like you are. More concerning, though, is the development of his thirst for your blood...
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Morally Grey is my Favorite Color by FandomWorld9728
Fandoms: Undertale (Video Game), Mafiatale - Fandom, Underswap - Fandom, Underfell - Fandom, Swapfell Corrupted - Fandom, Hockeytale -Fandom, Hockeyfell - Fandom
01 Aug 2025
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Trying to keep your work and personal life separate wasn't always this difficult. You had a good plan at keeping your roommates out of it. Now, if only you could stop getting into these situations long enough to put it into motion.
Series
- Part 8 of Undertales Across the Multiverse
- Part 4 of Papyrus/Reader Fics
- Part 6 of Sans/Reader Fics
- Part 1 of Morally Grey Fae
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you wanted to be loved so desperately,
that your fingers shook with ityou're not beautiful
but you could be./emily palermo (slightly altered)
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Why does he know so much about me?
Everywhere I turn, he's there
Anywhere I go, he's with me
I cant even think without him being in my thoughts
How does he know so much about me . . . .
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You didn't think that accepting a job would get you flirted with by one of your bosses, or that it would be near impossible to get the man out of your life. Yet, here you are!
Series
- Part 3 of Papyrus/Reader Fics
- Part 7 of Undertales Across the Multiverse
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Summary
You’re a villager in Dreamtale that decides to take the place of Nightmare Sans and eat the apples instead to protect him. It backfires and causes both guardians to turn to stone while you end up killing off the village. Now you feel lonely and can’t help wanting someone to stay with you.
Only problem is that you’re a woman with baby fever and the Sans AUs just so happen to act and look a lot like children…
(Dream and Nightmare are like 5,2 while the others are smaller in this story, it’s important)
(Maybe bi-weekly updates?)
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Reader is a lawyer who was looking for a cheap room for rent. After Papyrus left to study abroad for culinary arts, Sans was down to let her stay in his brother’s room for a fair price. They both have a great roommate relationship; they don’t know each other that well yet, but Sans makes her laugh.
One day, she walks inside the apartment, wondering if she was seeing double or if there were two identical skeletons in the middle of the living room.
Yeah, a second roommate was never mentioned on the lease.Series
- Part 1 of Three idiots
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“As always, humans first.”
The crowd was silent, clearly unenthusiastic. You tried not to think about your odds—it never did you any good. What were six slips of paper as opposed to hundreds?
With a shaky breath, you quelled the hammering in your chest. It will be okay. You do this every year, right? Every year, you come to the square, watch two members of your community be sentenced to certain death, then go home and silently contemplate the conditions of your world. That’s how it went every year, and you were certain that is how it would go this year.
So when the cold metallic voice announced your name over the loudspeaker, you could feel your heart stop.
Ice shot down your veins and a ringing filled your ear. You thought you could hear your mother scream, but she sounded so far away, you could barely register it. Was it really… it was you?
Another announcement of your name, followed by a sing-song, “come up here, darling!” confirmed yes, you. You were the human tribute of District 12 in the seventy-fourth annual Games.
Series
- Part 1 of the games we play
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Summary
When you were ten years old, your parents sent you to stay with a relative of yours from Ebott. Their villa was situated up on the mountainside, and you loved to explore the forestry. One day the ground gave out and you fell Underground, and faced terrors beyond your imagination. You were missing for weeks.
After you managed to miraculously return to the surface, your parents were relieved - but deeply troubled by your 'delusional ramblings'. They were convinced you were 'crazy', and feared how that would reflect on their reputation. Your doctors advised sending you to an in-patient psychiatric facility, which is where you spent the next few years in intensive therapy and counseling.
15 years later, you're a young adult with a somewhat manageable grip on life. You keep your head down, attend the social events that are expected of you, and try to be as unnoticeable as possible. Your parents arranged a suitor for you, and you're to be wed within the next year.
That is, until, those monsters your parents and doctors tried to convince you weren't real suddenly crawled out from the Underground. And they're a lot different from what you remember.
[[Underfell!verse.]]
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Sans wasn't planning on getting himself a slave. There were just too many mysteries surrounding the human to just let them go. Sans was going to find every little secret of theirs if it killed him. Make no mistake, it likely will kill him. If only the human would stop sucking up to his brother. He definitely fucked up.
You had lost hope. You resigned yourself to a life of pretending to be a weak human slave after years of being on the run. You were a broken mess of a person. When you get picked up by an asshole, you expect the usual. It would have been bad if the asshole skeleton didn't have a prickly brother with a heart of gold. But you couldn't keep playing docile human while humanity remains enslaved. Your friend was still out there.
Or in which, the author is sick of people using slave fics to make reader a broken/submissive doll and Sans a dom butthead, so author makes their own story and gleefully tramples over some cliches. No use of y/n. They just get nicknamed.