1 - 20 of 1,142 Works in Undertale Yellow (Master Sword Video Game)
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Regrowth (one step at a time) by Pillow_Fort
Fandoms: Undertale Yellow (Master Sword Video Game), Undertale (Video Game)
30 Sep 2025
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Summary
Or, Clover is revived after the true pacifist ending. Follow their journey as they reunite with old friends, discover new things, and help solve the interpersonal drama of the underground! (most of which is just them getting adopted)
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Deltarune: Red & Yellow by youraveragefanficreader1710
Fandoms: Deltarune (Video Game), Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
29 Sep 2025
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Summary
I don't have any vague summary.
But essentially, it's Deltarune with Undertale Red and Yellow sprinkled in.
Kris' SOUL is comprised of three souls, Frisk as the Red SOUL, Chara as the Black SOUL, and finally Clover as the Yellow SOUL.
This AU will also feature UT Yellow characters, integrated into Deltarune. Will they have significance? We'll just have to wait and see...
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Adventure Tale by Kaboom91
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game), Deltarune (Video Game), Adventure Time (Cartoon 2010)
29 Sep 2025
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Summary
After countless runs, something goes wrong, and now humans and monsters alike have been pulled into a strange new land with its own rules and its own dangers. Come Along With Me for the crossover nobody asked for, its ADVENTURE TALE!"
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Diving for Justice, Freedom and Managed Democracy by Dangeresque_On_Ice
Fandoms: Undertale (Video Game), Undertale Yellow (Video Game), Helldivers (Video Games)
29 Sep 2025
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Summary
The Monsters were dead.
They must have been, the Federation of Super Earth had said so; annihilated during the Great Galactic War along with all the other threats to Managed Democracy. So Clover was understandably confused when he set out to find the five missing Cadets only to discover a whole society of Monsters sealed underground.
What’s more, these Monsters were nothing like the tyrannical, Freedom-hating killers history had portrayed them as.
Things just weren't adding up. But why? It’s not like Super Earth would have lied, right?
Now with a TV Tropes page: https://tvtropes.org/pmwiki/pmwiki.php/Fanfic/DivingForJusticeFreedomAndManagedDemocracy
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Open the Light by SomeoneNotReallyNoteworthy
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
29 Sep 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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Quartet Rune by Kittany_the_Fox
Fandoms: Deltarune (Video Game), Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
29 Sep 2025
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Summary
In Deltarune's world, Chara and Frisk both run away from their 'homes' the same night. Unbeknownst from each other, they still arrive at the same little town.
Wounded, Chara has to be taken in. With nowhere else to go, Frisk is sent with them to stay with Toriel for the time being.
Kris is not too happy about this, especially since soon, everything will be set into motion. Two human kids, one acting out and the other curious to a concerning extent, will only make it harder for them. At least it can't get even more complicated.
...why is there a third one and why are they here ?? To... 'find the missing kid' ?
WHY ARE THEY STAYING OVER TOO.
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Summary
“C’mon, it’ll be fun!! Starlo really wants to show you his family's corn field-”
Alnasl hesitated. This was not the first time they'd had this conversation. "Are you sure?"
"Yeah!!"
Before he could object, Clover took him by the hand, dragging him outside the house. Such surprising force in such a small body. Fighting felt like too much effort, so he trailed along, tail swaying back and forth with unease.
- Language:
- English
- Words:
- 560
- Chapters:
- 1/1
- Hits:
- 16
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Save a Horse, Ride a Cowboy by average_alternative
Fandoms: Undertale Yellow (Video Game), Undertale (Video Game)
29 Sep 2025
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Summary
Living in the Wild East with Starlo was great. For the first time in a long time, you found yourself truly happy. It seemed like coming to the Underground was the best decision of your life.
That happiness is threatened when the Asgore finds out that a human has been living in his kingdom for months without being caught.
OR:
I turn my fic that originally started out as smut oneshots into a fleshed-out story with angst, fluff, and yes... still more smut.
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The One Where They Walk Home by Whipple
Fandoms: Undertale Yellow (Master Sword Video Game)
29 Sep 2025
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Summary
Five times Starlo walked Dalv home to his cozy Snowdin cottage, and the one time Dalv returned the favor.
(In which two monsters, while walking home, neglect to realize they’ve already found home in one another.) -
Don't bear the weight of the world alone by SkyWatcher3
Fandoms: Undertale (Video Game), Undertale Yellow (Video Game)
29 Sep 2025
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Summary
After her fight with Clover in New Home, Ceroba, in the middle of rethinking her entire life, chooses to save one child's life, and the consequences of her decision changes the fate of the entire Underground forever.
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The Dual Lights in the Underground by therealone12131
Fandoms: Undertale (Video Game), Undertale: Yellow, Undertale: Red and Yellow
29 Sep 2025
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Summary
It's been several years since the last human fell into the underground, and today, in the year 20XX, the eighth human falls in, just like the rest. Two unfamiliar, ghostly friends will await this human, but...
The human isn't Frisk.
A whole different adventure awaits this new human.
If you're new to reading this, it gets so much better after the first two chapters, trust!!!Inspired by the Undertale Yellow fan game by Master Sword and the Undertale Red and Yellow mod by Shinix.
Absolutely love their work, I hope my writing can match even a 10th of theirs. -
Embers, Bandages, & Vines: A Recursive Fanfic by 5h1ft
Fandoms: Deltarune (Video Game), Undertale (Video Game), Deltarune: Chapter Rewritten (Fan Work), Undertale Yellow (Video Game)
28 Sep 2025
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Summary
inspired by GoblinActivities's [https://ao3-rd-8.onrender.com/users/GoblinActivities/pseuds/GoblinActivities] SOULs Across Worlds Series.
Series
- Part 1 of 5h1ft's SOULs Rewritten Across Worlds
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Besos, Limon y Miel by Manchaalegre31
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
28 Sep 2025
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Summary
Chara opened their eyes, eyes with pupils of an intense, almost glowing red, a very uncommon coloration among humans, then they could see the white painted ceiling above their head, sat on the edge of the bed and a yawn came out of their mouth while their body stretched.
Series
- Part 2 of Love is blind, just like you.
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Back Into the Sun by Ghostly_Cowpoke
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
28 Sep 2025
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Summary
Clover thought that rooftop would be the end for them, and hopefully a step closer to a new start for monsterkind.
Three years after the barrier was broken, they woke up.
Basically a Clover revival fic because I think there are not enough.
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Undertale Yellow: Devoted Justice by Valerian120
Fandoms: Undertale Yellow (Master Sword Video Game), Undertale (Video Game)
28 Sep 2025
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Summary
As Clover jumps into the underground he has one thing on his mind. Find the missing kids. Though his plan goes awry when he wakes up next to a brown fox wearing a kimono.
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Old Wounds Need Healing by NotASnowMann
Fandoms: Undertale (Video Game), Undertale Yellow (Video Game)
28 Sep 2025
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Summary
Eight years before the barrier broke, a human by the name of Melody fell into the Underground. Their journey, as a result of their own actions, would be cut short - in gruesome fashion, no less. The human that fell after them, Clover, would learn some of what they had done and the effects that followed.
Eight years later, the barrier broke, and Clover would be led by a flowery friend to a most shocking discovery - Melody, alive and breathing.
But with Melody's revival comes with it the return of old wounds - wounds that Melody needs to at least try to help patch up. But Melody came to the Underground for a reason, and as they work to fix the wounds of others, their own scars become apparent.
Series
- Part 2 of Legacy of a Melody
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Duality of Justice by hw_writer
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
28 Sep 2025
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Summary
Fighting against royal nepotism,
Stood 4 humans who died for monsterkind.The first was the patient of spoiledness,
Who planted the seeds for action.
Then came the revolutionary,
The brave soul who died for the cause.
Don’t forget the human who stood on their values,
Whose silent perseverance was idolized for resilience.
At last was the giver,
Their kindness to the unkind led to their demise.The fifth, the enforcer of justice.
With the revolutionary seeds in the soil,
Born with a soul so determined,
The others sat for him so he could stand.
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A world where Chara and Asriel weren’t able to go through with their plans, yet the royal family continued on a murder spree. For each human who fell, the underground saw them as leaders of revolution, only for that hope to be stripped by the monarchy. How would Clover be different from the others?Navigating through the complex relationship between the crown and the underground, Clover and Frisk set on a journey to liberate monsterkind, using everything they could to bring justice against royalty. But when one man serves as the judge, jury, and executioner, how fair can justice really be?
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New Hometown by NullVol
Fandoms: Undertale (Video Game), Deltarune (Video Game), Undertale Yellow (Video Game)
27 Sep 2025
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Summary
School is about to begin for the children of Monster Town, making life all the more hectic for them. That is only reinforced by the sudden appearance of a new human who feels they have no control over their own life.
Tags are subject to change. May go on hiatus a few times as I imagine this one to be on the larger side.
Series
- Part 3 of To Resurface
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Today is not a good day by Bloody_Honey
Fandoms: Undertale Yellow (Master Sword Video Game)
27 Sep 2025
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Summary
Orion struggles with their period
- Language:
- English
- Words:
- 850
- Chapters:
- 1/1
- Kudos:
- 1
- Hits:
- 12
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Heart of Golden Petals by PRiSe (Passionrising)
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
27 Sep 2025
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Summary
After their battle, Asriel suspects Frisk already beat him once before. When they confirm it to be true, they reveal there is one last soul to be saved- and they need Flowey’s help.