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OVERWRITE Aftermath - Chapter 1: The First Domino by OVERWRITEDimp
Fandoms: Sonic the Hedgehog - All Media Types, Undertale (Video Game), Dragon Ball, Five Nights at Freddy's
30 Oct 2025
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Summary
We all like crossovers, right? They couldn't possibly get out of control...right?
After a chain of events lead to Sonic and a few others getting assimilated into the world of XTale, many changes occur as the rules of the Omniverse change to keep itself stable, which sets off a chain reaction that will change reality forever. -
The Games We Play by FoundUser, Primordial_Rebel_Jester
Fandoms: Deltarune (Video Game), Undertale (Video Game)
30 Oct 2025
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Summary
There are infinite opportunities in this world. Infinite opportunities for dreams. Infinite opportunities for hopes. Infinite opportunities for regrets... for loss.
There are some memories you would rather just forget...
The old royal scientist knew that better than anyone.
BRIGHT, BRIGHTER, YET BRIGHTER. SO YOU STILL SHINE ON, EVEN AFTER EVERYTHING YOU ENDURED. EVEN THROUGH THE COLDEST NIGHT.
But a story doesn't have to end the same way.
EXCELLENT. TRULY, EXCELLENT. LET US BEGIN THE CREATION OF OUR NEW FUTURE.
Sometimes... a game can have a secret ending.
(A Deltarune novelization that takes some unexpected turns from canon. Based on some theories, and a little bit of imagination, even the unknown can make itself known.)
(Custom Art and beta'd by Primordial_Rebel_Jester. Story by FoundUser.)
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Nine strangers. One fall. A power none of them understand.
When eight teens and a young girl follow a mysterious light into Mount Ebott, they expect adventure. What they find is a crumbling underground world of monsters, magic, and ancient conflict. But that’s not the strangest part.
Each of them awakens with a glowing SOUL—a trait linked to their heart, their will, their essence. But these SOULs don’t stay still. They shift. Swap. Sync. And with every battle, their bond grows stronger… or more dangerous.
As they struggle to understand this new power, they’ll face old threats, cryptic warnings from a familiar talking flower, and a world that remembers the war they never fought.
They just wanted answers. Now, they’re part of something much bigger—and something down here is watching.
Welcome to the Underground. Stay determined… or get creative.
- Language:
- English
- Words:
- 14,212
- Chapters:
- 15/27
- Hits:
- 49
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Summary
Please read very last chapter, large updates to come to the story in the coming months.
Papyrus never made friends very well, having been part of the monster race in Middle school with those brutal human children. He had gotten used to be bullying until a certain female had stood up for him, ran those teenagers off to never bother him again. If only meeting each other didn't backlash onto her life into a downward spiral never to be the same after meeting Papyrus's eldest brother, the one he never named in conversations. At least she's met so many type of skeletons that made up for Papyrus's eldest brother horrid actions a little while universe hopping to get back home.
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Shadows Cut From the Soul by CodePlanTB
Fandoms: Undertale (Video Game), Deltarune (Video Game)
30 Oct 2025
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Summary
A few days after the end of the pacifist route, Frisk finds themself facing an unknown threat lurking in the dark. Frisk needs to work with their friends and stop the threat before the whole underground becomes darker than dark.
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The RESET button is pressed. No surprise. Another wound inside Sans tells him this wheel will never let go. The world around him melts, everyone forgets themselves, forgets what happened between them. The ketchup flies back into the fridge and dissolves with it into nothingness.
He accepts this with restraint, ready to face the void, to be a toy in someone else's hands.
But then he is torn from the shroud of nothingness, a golden light penetrates Sans, and he opens his eyes in a different... place.Sans and Allesandr full-length - https://ibb.co/V0WCqq4c
Sans (in battle, cover, AI) - https://ibb.co/qMPFB3Ks
Sans (AI) - https://ibb.co/NdYkS4bh
Allesandr Ethelien (sims) - https://ibb.co/4Fb2nwX
Allesandr Ethelien (in battle, cover, AI) - https://ibb.co/kfbS276
Allesandr Ethelien (profile art) - https://ibb.co/21XQYdgR
Mike Armory - https://ibb.co/YTPtmWV
Papyrus(spoiler) - https://ibb.co/fYXWcrZ3 -
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So, I heard you like skeletons...
Reader insert prompt fills for @skeletonh0e's sans-centric Kinktober challenge on tumblr
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Spanning over ten years, this huge fic will be split into ten parts for each year.
This fic is Alphynecentric, with Alphys at the helm. This is a fic that came outta nowhere (as they all do) and hasn't quit since I started. I have no idea where this will go. All I know is that it is very emotional, romantic, and rather silly.
Just enjoy. This may be my last fic for this fandom.
Series
- Part 1 of Ten Years
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Sans and papyrus are missioned to ho undercover, to try and get close to and figure out things about a spy called y/n l/n
They do an amazing job- Language:
- English
- Words:
- 594
- Chapters:
- 1/?
- Kudos:
- 4
- Hits:
- 27
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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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After the Visitor left behind that angelic abomination who wipe out 90% of humanity, Sam know's that they can't stay in the city. Searching in the former room of Sybil he found the former research of the astronomers and discover a place that was not affected by the visitor, Mt Ebott. He doesn't know why but it seems there is some kind of barrier that keep the place safe during the end of the world.
With only that as his last hope to survive, Sam and his friends go to Mt Ebott but the exalted four find them, taking them one by one until it was only Sam and the childrens.
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Timeless Justice by TheDoctorWD
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
30 Oct 2025
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Summary
After countless resets and endless repetition.. something has changed. The timeline has began shifting, changing its path for the first time in a long time. A new path Flowey hasn't seen before.
Well, it might take Clover longer to reach Asgore but Flowey has all the time in the world after all. And seeing something new finally happen has piqued his curiosity. Drawn in by the unfamiliar, Flowey watches with morbid fascination as Clover is not able to give up his soul this time. Encounters shift, monsters react differently, and the world itself begins to remember things it was never meant to.
Events shuffle. Characters act out of turn. Rooms appear where there were none. And for the first time in countless resets, Flowey doesn't know what comes next. Clover's fate is uncertain. Though Flowey knows he will get those human souls, no matter what.
Series
- Part 1 of Fractureverse - UT/UTY/DR
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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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Gran, Sweet Gran, Where Are Your Wolves? by freshiewrites
Fandoms: Undertale (Video Game)
30 Oct 2025
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Summary
Papyrus and Sans have escaped their kill or be killed lives Underground with the rest of Monsterkind, and have found an apartment building to live in. It's nothing special, and very run down, but there are a few treasures to be found inside.
Gran will take care of these boys if it's the last thing they do. After all, who doesn't need a little help sometimes?
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Undertale Kinktober 2025 hypnosis edition by Chris_ghosty77
Fandoms: Undertale (Video Game)
30 Oct 2025
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Summary
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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Falling into the Underground wasn’t on your to-do list. Falling for two skeletons definitely wasn’t either.
Blue is sunshine bottled in bone—sweet, loud, and determined to make you smile even if it kills him. Rus is quiet, steady, and the kind of person who remembers your favorite tea. Between the two of them, you’re constantly flustered, overfed, and very, very loved.
When both brothers realize they’ve fallen for you, chaos ensues—except it’s the polite, apologetic kind of chaos where no one wants to hurt anyone else. What starts as a tangle of awkward affection becomes something honest and warm: a relationship built on trust, laughter, and a whole lot of skeleton hugs.
“WE CAN SHARE THEM!” Blue insists, bright as ever.
Rus sighs. “That’s not how dating works, bro.” -
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In the brutal world of Underfell, everything runs on discipline — and no one enforces it harder than Papyrus. The Great and Terrible Papyrus lives by the schedule: training at dawn, patrols, order above all. But when his lazy brother dares to break the routine by getting sick, the iron commander of Snowdin finds himself waging a very different kind of battle.
As Sans coughs and cracks jokes from under his blankets, Papyrus’ sharp edges start to bend — just a little. Soup replaces training, orders soften into care, and the line between “boss” and “brother” blurs. For one rare, quiet day, Snowdin’s coldest house learns the warmth of something dangerously close to love.
A soft, domestic Underfell story about exhaustion, stubborn affection, and what happens when the scariest skeleton in the Underground learns to rest.
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frisk decides to do a pacifist run...
- Language:
- English
- Words:
- 158
- Chapters:
- 1/?
- Kudos:
- 3
- Hits:
- 32
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The first anniversary of the Truce between the Bad and the Star Sanses Nightmare hosts a party at the castle for all to attend. We meet the players in the party.... At the end an unexpected guest to the multiverse makes their apperance....
The tags will constantly be updated as the story goes
Series
- Part 2 of Into the Multiverse
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Summary
开始于2018年12月30日，2025年8月10日正篇完结，手绘漫画，共829页，缓慢上传中。
“也许从我遇见你的那一刻开始，一切就注定再也无法回到原样了。”
sans，只是在snowdin一如既往地履行着哨兵的职责，却在ruins的入口附近偶然抓获了不知为何偷偷摸摸进入了undertale的ink！sans。在一番“友好交流”后，sans接受了ink的请求，前往他推荐的多元宇宙，并在那里遇到了一个会改变他一生的怪物——当然，对于那个怪物来说也是如此。