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Unavoidable Outcomes by Crystalight532
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
07 Dec 2025
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Summary
The Multiverse isn't as unreachable as one might think. Sometimes, all it takes is one aware person to tip the scales for another to find out about it. But when one isn't ready for it, returning to their own world is relieving and best for the psyche.
Humanity's thirst for knowledge is near insatiable. How far would they be willing to go to learn more about their new magical coinhabitants on the surface? How far would they go if they could weaponise their magic?
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Noelle Becomes Brave by IllegalMeerkat
Fandoms: Deltarune (Video Game), Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
07 Dec 2025
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Summary
The world is on a collision course with the end of everything.
Noelle Holiday is attacked in Hometown while walking home, and after returning home a week later, she knows that something is wrong. Her mother isn't acting right, and there's something out in the woods around her house.
With all of her friends and family holding secrets, the Roaring looming overhead, and the knowledge that the world rests on her shoulders, Noelle forgoes her mental health to make a better tomorrow. She'll get stronger.
Whether her friends let her is another story.
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A Copykit in the Ketsukane Family: An Alternate Path by TheTakenCatking
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
07 Dec 2025
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Summary
This story is an alternate path for 'The New Kit in the Ketsukane Family.' Please read that one first before venturing any further into this work.
Series
- Part 2 of The New Kit in the Ketsukane Family
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Open the Light by SomeoneNotReallyNoteworthy
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
06 Dec 2025
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Summary
Happiness was rare for Clover in their life, something he now never expected with his sacrifice.
Kanako thought her happiness was over with her grave mistake.
Yet here they were, meeting each-other outside the bounds of reality. The puzzle, however, is far greater than anyone realized. Not everything will stay forgotten.
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UDY on the Surface by CommanderBullet
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game), Deltarune (Video Game)
06 Dec 2025
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Summary
It's been a few years since Monsters returned to the Surface and lots of things have changed... Accompany your favorite characters from Undertale, Undertale Yellow and Deltarune as they try to manage their everyday responsibilities and go through a few wacky adventures while at it in this slice-of-life crossover AU.
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Another Phantom / Act 1: Intwined by CrumbleKoek
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
06 Dec 2025
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Summary
In a timeline where things kept being slightly off, the first drastic change happens when Ceroba succesfully gets to Hotland with Clover.
However, the consequences of this action slowly become evident, as things don't go as anyone involved could have planned.
Series
- Part 1 of Another Phantom
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- Language:
- English
- Words:
- 1,050
- Chapters:
- 1/1
- Kudos:
- 5
- Hits:
- 22
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Undertale Yellow's Second Anniversary Week! (2025) by Oryans
Fandoms: Undertale Yellow (Master Sword Video Game)
06 Dec 2025
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A small collection of stories based of this year's UTY Anniversary prompts!
1. Family/Celebration
2. Fav UTY au (thats not your own)/Crossover
3. OC/Pre or post game
4. Relationship/Favorite memory
5. Favorite Design/Growth
6. Home/Headcanon
7. Remake your favorite UTY work (done by you)/SurfaceSeries
- Part 2 of Undertale Yellow Anniversary Fics
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Summary
“What a strange creature… let’s open you up and see your beginning.”
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Hangover by OctavianClef for Prism001
Fandoms: Undertale Yellow (Master Sword Video Game)
05 Dec 2025
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Corruption Tale by TimeWitchHilda
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game), Deltarune (Video Game)
05 Dec 2025
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Summary
What of instead of the Human Monster War A Virus took hold that slowly corrupted the Humans and Monsters of the world? What if When Chara Fell Into the Underground She merged with Asriel to try to save the world above? What if when every Human fell They tried to escape the corruption above? What if the Barrier was meant for a safe place instead of an imprisonment? All of these questions will be answered with Frisk who knows somethinf about the Virus that no one else knows. Maybe it's even something Chara knows to. Will these two Humans whose lives are a Century apart manage to save both the Underground and The Surface of this evil Virus?
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Hello I recently got into Friday Night Funken and I saw an AU with this Corruption story. And I think of doing something similar but not quite the same either. I hope you all enjoy.
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Someone powerful is tired of the bad endings. Time to take fate into their own hands.
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Summary
The barrier...
...was destroyedMonsterkind was free at last. Asriel used the 6 human souls collected over the years, and all of the monster souls to break the barrier and free everyone. No one questioned it when the monster souls returned to their owners afterwards. What did surprise everyone, was that the same happened to the human souls...
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This is the first time I'm posting on ao3, don't expect too much from me, but I couldn't find the fic I wanted so I decided to make one instead >:)
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Soulbound by Tricky_17
Fandoms: Undertale Yellow (Master Sword Video Game), Undertale (Video Game)
04 Dec 2025
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Summary
After the events of the true pacifist route in Undertale Red & Yellow (with Frisk choosing to stay with Toriel):
Monsterkind has been living peacefully on the surface among humans ever since a young child, Frisk, saved them from their long captivity in the underground.
All is well for Frisk and their friends. All except Clover, a young boy who was recently brought back to life by Asriel Dreemurr as gift for his selfless sacrifice in the underground. While he appreciates his second chance at life, he has never gotten over a friend he wishes he had never had to say goodbye to. Chara Dreemurr, the first human to fall into the underground, and one of two ghosts, alongside Clover, who guided Frisk through their journey, has not forgotten about her friend either. Unlike Clover, Chara was not given a second chance at life, and continues to watch over Frisk on the surface. While she enjoys Frisk’s company, Clover has always been at the forefront of her mind. Unknowingly to Clover, there is one way for Chara to return to the living realm. However, Chara has been hesitant to act on this.
After all, such an act would require a permanent marriage of souls.
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Early Awakening by 3Pleatv
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
04 Dec 2025
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Summary
Well.
This was new.
Chara was not accustomed to being see-through. After all, being corporeal had been their natural state for most, if not all of their life.
Did that make this non-life or undeath?
They were doubly unaccustomed to seeing another human in the Underground.
Were they dressed as a cowboy????
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Basically: Undertale Yellow if NarraChara was still prevalent! What will change? What will stay the same? And WHY is this flower following them around so intently?!Note: This is not connected to a (possible) DND project, it's just connected via being Cocoapowder related.
Series
- Part 3 of Cocoapowder
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The bell rings hollow by anonymousyellowlizard for TGClmao
Fandoms: Undertale Yellow (Master Sword Video Game), Undertale (Video Game)
03 Dec 2025
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Summary
On a genocide run, Clover fights Starlo but doesn't finish the job, leaving him for dead and moving on.
Ceroba finds him in the aftermath.
But what becomes of justice when Ceroba still has people left to lose?Series
- Part 21 of Kink/Whumptober 2025
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Desert Sanctuary Fan-Content: Sanctuary on Fire by youraveragefanficreader1710
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game), Transformers - All Media Types, ULTRAKILL (Video Game)
02 Dec 2025
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Summary
I really liked Desert Sanctuary's concept. So I wanted to do a *small contribution.
*I lied, it's BIG. Over-arching plot, characters from a different franchise integrated into this universe (Mainly Transformers), and most importantly it's not canon to the actual DS with some of my headcanons sprinkled here and there.
Desert Sanctuary belongs to KarmaSpidr (good lad)
- Language:
- English
- Words:
- 3,785
- Chapters:
- 1/?
- Kudos:
- 1
- Hits:
- 83
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Call for Justice by TheDoctorWD
Fandoms: Undertale Yellow (Master Sword Video Game), Undertale (Video Game), Deltarune (Video Game)
02 Dec 2025
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Monsterkind is finally free. Everyone is at the surface now. A happy ending is it not? To the little cowpoke’s surprise he is alive again! And it seems he was not the only one that was brought back to life.
Clover may not know why he’s alive again but one thing for sure is that going on another adventure wouldn’t hurt him at all, it’s time for him to bring Justice once again. Meanwhile the darkness seems to grow darker, yet darker.
Series
- Part 2 of Fractureverse - UT/UTY/DR
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Summary
When Clover jumped into the hole on Mount Ebott, she was certainly not expecting to come face to face with a ghost of her future self. As her rather annoying doppelganger attempts to guide her through the Underground, Clover must deal with the fallouts of their actions, and make a change for a better timeline.
Meanwhile, a certain flower still seeks to exact revenge.
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The Weight of Responsibility by LeoHastLostIt
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
01 Dec 2025
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Summary
Clover's sacrifice had an impact on all of their friends, especially on Ceroba who now tries to change for the better. So when she came across another human who needed help, she took him under her wing without further thought. Little did she know this chance encounter was a starting point for her healing and a chance for redemption.