1 - 20 of 1,365 Works in Undertale Yellow (Master Sword Video Game)
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Cozy Night by SerialDesignationN19
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
23 Jan 2026
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Character Profiles of... whatever the fuck this group is (RWBY Edition) by youraveragefanficreader1710
Fandoms: RWBY, Deltarune (Video Game), Undertale (Video Game), Undertale Yellow (Master Sword Video Game), In Stars And Time (Video Game), Transformers - All Media Types, OneShot (Video Game), ULTRAKILL (Video Game)
23 Jan 2026
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Error Trigger by Metal_Omegux
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
23 Jan 2026
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Clover does something the impossible - something they absolutely should not have done. Now, the world is breaking apart around them, like the rules of reality are being forgotten, one by one. Clover and Flowey race to New Home, trying to get there while there's still a world left.
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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)
23 Jan 2026
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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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RULETH #1: I AM THE ONLY PROTAGONiST by MEDVEDUYM
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game), Deltarune (Video Game)
23 Jan 2026
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!!! HEARKENTH !!!
THIS WRIT HATH BEEN CONFiSCATED BY MINE OWN ROYAL SELF.
THE PREVIOUS AUTHOR HATH BEEN BANISHED TO THE LOWEST DUNGEONS FOR HIS INCOMPETENCE. FROM THYNE MOMENT FORTH, I — ROUXLS KAARD, THE GREATEST DUKE OF PUZZLES — AM IN ABSOLUTE CONTROL!
CLICK, THOU SIMPLETONS, AND MARVEL AT MY SUPERIOR GENIUS, LEST THOU WISH TO PERISH IN MINE UNBEATABLE PUZZLES!
GODETH DAMNETH, JUST CLICK IT ALREADY!
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Woventale - Shorts by Op7
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game), Deltarune (Video Game), Alternate - Fandom
23 Jan 2026
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In Woventale, the Underground is a patchwork of strange cities and altered destinies, where familiar faces walk unfamiliar paths. Across the stitched landscapes of Snowfall, Sea Shore, Smokestack, and the Forest Ruins, lives intersect in quiet, calm, or sometimes dangerous, and unexpected ways.
This is the world woven by 'Watchers'. Like you. So why not stay awhile, and listen?
This - is not a grand story. This is a collection of short stories, moments, scenes and encounters.
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Unavoidable Outcomes by Crystalight532
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
23 Jan 2026
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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?
Series
- Part 1 of Gears Of The Multiverse
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Someone powerful is tired of the bad endings. Time to take fate into their own hands.
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UnderTime by WalrusSilverfish
Fandoms: UnderTime (by WalrusSilverfish), Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
22 Jan 2026
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Anti-ControlTale by MEDVEDUYM
Fandoms: Undertale (Video Game), Deltarune (Video Game), Undertale Yellow (Master Sword Video Game)
22 Jan 2026
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"What happens when a mastermind strategist is trapped in the body of a twelve-year-old girl?"
Nick is a genius, a tactician, and a pathological liar. After a chaotic soul fusion with Chara, he finds himself in a body he didn’t choose, living a life he didn’t ask for. While the Dreemurr family sees a child who needs protection, Nick is busy playing a high-stakes game of chess against destiny itself.
He’s not here to be a hero. He’s here to regain control. Whether it’s bluffing his way through scientific debates with W.D. Gaster or struggling with a body that betrays him at every turn, Nick will do whatever it takes to survive.
Anti-ControlTale: A story of identity, 22nd-century tech bluffs, and the brutal reality of being a man stuck in a vessel that isn't his own.
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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)
22 Jan 2026
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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!"
Series
- Part 1 of Adventure Tale Collection
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Shenanigans on the Surface (feat. Heterosexual Cocoapowder) by Hopeless_Rot (Metal_Omegux)
Fandoms: Undertale (Video Game), Undertale Yellow
22 Jan 2026
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When this started, no one could've foreseen that Chara, Prince of Monsterkind, would fall for resident cowgirl, Clover, let alone that she'd fall for Chara too. And Flowey couldn't believe it was his fault. When Asgore has to go on a diplomatic trip, Flowey convinces his father to let him and Chara stay at Clover's house, but to his terror, there is love in the air. Flowey feels hopelessly stuck as a third wheel, so in a desperate bid he gets Frisk, but, to add to Flowey's growing horror, they are on the side of romance.
Well, at least everyone can all have loads of entertaining chaos together!
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New Hometown by NullVol
Fandoms: Undertale (Video Game), Deltarune (Video Game), Undertale Yellow (Video Game)
22 Jan 2026
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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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The Devil (Flowey) on Your Shoulder by Kitstenk
Fandoms: Undertale Yellow (Master Sword Video Game)
22 Jan 2026
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Summary
Clover gets injured falling into the Dark Ruins and Flowey can't heal it with a save. Instead of resetting, he gets the idea to help Clover a little (a lot) more directly than usual.
This changes everything and nothing at the same time.
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Crimson and Clover by ApolloBluJay
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
22 Jan 2026
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After the events of Undertale Yellow and Undertale, Clover is brought back to life and is able to enjoy a stress free life with their new family. But after an encounter with a figure in their dream, Clover is left trying to figure out how to how to bring them back, and how navigate this new world of monsters and humans living together
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Undertale Yellow: Gilded Tale by Tokal
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
20 Jan 2026
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Clover stands at the fateful crossroads after the fight with Ceroba, listening to his loved ones bicker over keeping him safe, they hear the voices of every beloved friend they made along the way, but something sticks out to him out of the constant voices.
"Our little girl... Kanako... She needs to live a happy life, unaffected by my endeavors."
After such pain inflicted to a child and mother, Clover decides on a final solution.
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Request Form and Request Forum (AKA Requests 2.0 CRACK EDITION) Self-Indulgent MhaRune Fic(Answer On Want Deltarune But Soon Will add Mha Parts)(Working On Until Chapter 5 Then WOTJB FIC)(This Title is TAKING TOO LONG) by Cuteturtle2
Fandoms: Deltarune (Video Game), 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), Undertale Yellow (Master Sword Video Game), Undertale (Video Game)
20 Jan 2026
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Should I make this. WELL WHO GIVES A CRAP I WILL NO MATTER WHAT It's Funny and There will be Dark Worlds and Weirder Shit. Will not usually write Non-Deltarune Ships, and Very Rarely Ships Beyond Teacher Spamtenna and the Room Being a Dark Fountain.(Though AV Club Spamtenna is Perfection). Also the Roaring Knight is a Teacher for Some Fucking Reason.(Dess Knight because Titans and Titan Spawns though being my beloved Eldritch Horrors are rarely as liked as I like them.)(Teen For Canon Typical Violence and Death for Both, and Also Enby Kris shouldn't even need to be a Tag the Tobyverse is Humans are They/Them Unless Said Otherwise, Like Chara Being They/It and the Vessel Being It/It's.). The Vessel is a Student that The Soul Inhabits, Kris be Free(Twisted Sword Hell Yeah), and There'll Be Player Options and Polls. Players Can Vote on Quirks and The Like For Students and The Soul but Most are just going to be the Soul Mechanics or Game Mechanics Expanded since Magic and X-Slash Go BRRR. Kerdly And Kralsei and Many other ships will be Joked about by The Vessel Since the Vessel Has Some Knowledge Of Shippers and Ships.(Some Won't Happen Except as Horrified Reactions or Hypotheticals)
Series
- Part 3 of Request Fic Results and Form
- Language:
- English
- Words:
- 160
- Chapters:
- 1/?
- Kudos:
- 1
- Hits:
- 32
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Entre a coroa e a pólvora by Venusbobonaecapeta
Fandoms: Undertale (Video Game), Helluva Boss (Web Series), Deltarune (Video Game), Undertale Yellow (Master Sword Video Game)
20 Jan 2026
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Você já imaginou o que poderia acontecer se a princesa do inferno se apaixonasse perdidamente, por uma súcubo de nível baixo? Não? Então descubra, lendo essa caótico história de amor intenso e selvagem!
(Essa história tem como base a série animada de helluvaboss, por isso fiquem cientes que tomei a liberdade de alterar algumas coisas para tornar essa obra mais o mais original e única. Mas espero que aproveitem!)
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Cocoapowder Fic Ideas I Can't Get To Yet by 3Pleatv
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game), Deltarune (Video Game), Portal (Valve Video Games)
20 Jan 2026
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With the sudden popularity of Early Awakening (which I hugely appreciate, by the by!) I said in the seventh chapter of that fic that I had been debating making a Cocoapowder fanfic for a good bit and decided to settle with fleshing out their dynamic first.
And then the evil thoughts came. "You could write more, you could!!!!! You have the capabilities!"
But y'see, I fear burnout. So, I made a compromise. I'd write snippets of those ideas and leave them here for when I finish with/get distracted from Early Awakening! Short snippets of the ideas I have.
Enjoy!
Chapter One - Superheroes AU
Chapter Two/Eight/Ten/Thirteen - Deltarune AU
Chapter Three/Four/Five/Six - DND
Chapter Nine/Fourteen - Spamtenna Cocoapowder AU (yes you read that right)
Chapter Eleven/Twelve - Pokemon AU
Chapter Fifteen - Portal AUSeries
- Part 2 of Cocoapowder
- Part 1 of Undertale DND AU
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Worth A [Shot] by Grand_Spurinko
Fandoms: Deltarune (Video Game), Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
19 Jan 2026
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Clover is torn between his duty and his chance at a better life.
Flowey must figure out why his RESET button isn't working.
Martlet, Ceroba, and Starlo have to figure out how to care for Clover.
Above all, Spamton G. Spamton must figure out how in the [All Expenses Paid Vacation] he got here... and maybe make some [Deals] along the way.