Mendoom
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Summary
You wake up as someone who has nothing left to lose, stranded in an Underground that's slowly dwindling in life. Despite being capable of crossing the barrier, you don't dare to, when you have a personal endeavor and promise in mind.
It's a different story when you're transported into an ideal alternate timeline, where your oath is rendered void. Here, with your various counterparts, you don't appreciate reliving the life of a prisoner-- especially when it's enforced by a reflection of what your Sans could've been.
(OR: In a pacifist timeline, an alternate Sans possessing a human soul appears, risking the newly established peace between humans and monsters. If Classic Sans had hair, he's pretty sure he'd still end up bald.)
[A Various x Sans!Reader fic.]
Series
- Part 1 of parallax error
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Working through issues with a shunned diety by Hellian_Eden, Jesus_fox
Fandoms: Undertale (Video Game)
07 May 2026
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Summary
The Multiverse is vast and nigh infinite, possibilities, concepts, the very function of a world's reality only limited by sheer creativity.
Within this realm, Dreamtale exists as an enigma, plucked from another Multiverse entirely. The tragedy of it's Story forced to continue beyond it's Endings, for it forced the concept of Balance into the Multiverse's rules. Now open-ended, the only two Characters wanders throughout the Multiverse as one of it's Outcodes.
Dream broke out of stone to one colorful and curious Inkblot, so much to comprehend for someone so small. But alive nonetheless.
Nightmare woke up freshly dead.
Au: Get it? Cuzhe died lmao
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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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Summary
Then they appeared. Three figures, emerging from the shadows, their forms dark and wraithlike in the dim blue glow.
At first, they seemed like nothing more than silhouettes. But as they stepped forward, more details emerged, each one more horrifying than the last. One of them - no, two of them - moved like animals, low to the ground, and one even crawling on all fours. Their bone-clad bodies shuddered, their movements unnatural, and Cross’ stomach turned. They were covered in a strange, greenish-black substance that glowed faintly, like algae festering on dead flesh. It clung to their forms in long tendrils, the sickly lichen-like growth looking as though it was the only thing keeping their decaying skin from falling off entirely.
After his disownment, Cross finds himself wandering the world alone, until a skirmish with some wolves leaves him falling for some creatures leaving in an abandoned city inside a Hollowed Mountain.
And they're just as loving as they are terrifying.
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Where is my "how to raise a babybone for dummies" book again ? [REWRITTEN] by NtBub
Fandoms: Undertale (Video Game)
11 Aug 2025
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Summary
It was cold, so cold, too cold.
You were draining, slowly, as an orange whose juice would be taken....
the warm juice, the warm and red juice. Leaking, through a dam's rift.
You felt like an empty Shell, empty of what it contained, empty, too empty.
You couldn't see anymore, couldn't hear anymore, couldn't feel anymore.
You were surrounded by emptiness. An emptiness that took everything, and nothing at once. Then, Came the light.
and you were no longer… empty.
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Or when a reader who got no memory except for Undertale and common sense, wakes up as the most mysterious skeleton of the bunch ; W.D. Gaster
It's way before Frisk fell underground, but after the Asriel&Chara incident.
(ALSO REWRITTEN FIC, I released it back in 2019, then deleted my account, all fanfics with it, decided TO WRITE THEM BACK CAUSE I LOVED THEM)
Series
- Part 1 of Reader!Dadster VS this WHOLE BS