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Tyrant Xilian enters the Undertale Universe by XeptorKingGG
Fandoms: Undertale (Video Game), Original Work
11 Jul 2025
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Tyrant Xilian's avatar had arrived in what looked to be an alternative reality from his own. This reality was what looked to be from the famous game Undertale, known for it's complexity and wide establishment of fan creations. He took the appearance of a monster called "Monster Kid", tricking others with his disguise he played along, mimicing the monster perfectly.
However, the current games route he was in was known as the genocide route. -
LNT: REWIND by Goat_and_Coat
Fandoms: Little Nightmares (Video Games), Undertale (Video Game)
08 Jul 2025
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A recreation of the original LNT.
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Home Is Where the Soul Is by muse_writer
Fandoms: Stardew Valley (Video Game), Undertale (Video Game), Deltarune (Video Game)
07 Jul 2025
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Twenty-five years ago, a farmer took over her grandfather's old farm and turned into one of the most important farms in the Ferngill Republic.
You are her child.
You know the farm and the Valley like the back of your hand, having been raised in it your whole life. But now, with your parents going away for important business, the farm and its responsibilities fall onto you. Sure, maybe there is a lot of new weird stuff happening in the Valley that started as soon as they left and you were holding it all together with the skin of your teeth, but you got this! Totally. 100%
That is, until you turn on the TV one morning and it tells you that your little sister friend Frisk had broken a barrier and was now an ambassador to a bunch of monsters. Only for said monsters to drag you into their shenanigans and problems.
What could go wrong?
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It isn’t fair. You just wanted to be left alone…
Isn’t this what you deserve though? You broke the rules, everyone was perfectly upfront with you on what the conditions for being allowed to live were. It’s the right thing to do, what’s one more time?
Maybe they’ll forgive you if you let them… maybe they’ll forgive you.
You look up at the expressions on the monsters’ faces and you know in your heart that this isn’t going to stop.
Series
- Part 4 of The Power To Reshape The World
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The barrier just got destroyed, the future has hope, but Frisk can't stop thinking about the human souls, they feel like they need to help them, but they're not sure how
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7 Humans. A monster. And a Prince of the Dark.
That is what's needed to seal the fountains.
But... what happens when you throw a scorpion with a not so fun past in the party? Laughter will be shared, angst will be there, and budding relationships between certain characters blossom, both canon and non-canon!
Join the cast of both Canon and non-canon characters through the Dark Worlds!
(Grouptale AU, but with a twist, as well as first and third-person POVs!)
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Life in Hometown had always been quite; the small, sleepy, rural community had little to offer. For Ralsei Dremmurr, this feeling was compounded by a list of tragedies in his youth and years of being bullied. But when a spur-of-the-moment decision by his homeroom teacher throws Ralsei and Lancer, one of Ralsei's bullies, into another world, his life finally speeds up; for better or worse. Now expected to work with Lancer, Save the world, help several new friends with their problems, help his old friends with their problems, and more, Ralsei's got his work cut out for him.
A roleswap AU of Deltarune, where Ralsei/Kris trade places, Lancer/Susie trade places, Noelle/Berdly trade places, and many Darkners rotate around.Series
- Part 1 of Shattered Mirror
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Unexpected Hero by LemonCake64
Fandoms: Undertale (Video Game), The Legend of Zelda & Related Fandoms, The Legend of Zelda: Twilight Princess
04 Jul 2025
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“Not so fun being stuck in some loop right? Trying to fight to protect what ya got, not getting a choice in it. If I had the choice I wouldn't remember either.” The words oddly felt comforting. Link let out a slow breath, closing his eyes for a brief moment.
He didn't feel alone for the first time in a long time.
And that?
That was terrifying.
“To be honest, I kinda gave up a while ago. Just sat back and let the chaos go on, felt like nothing I did mattered anymore. Everything would just be reset anyways. Stopped caring what happened, that was until you showed up.” The skeleton’s eyes bore back into the Hylian.
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The human was not gonna back down nor fight, and Sans, if possible, wanted to avoid a violent escalation of the situation as well. Because, despite the souls’ best efforts, his body had not yet recovered from his escape. Every single one of his bones ached, and he was almost certain that the cracks that already covered a majority of his skull had expanded.
However, the stalemate didn’t last long because, as it seemed, the human had an ace up their sleeve. The outline of a black soul manifested on their chest and, soon after, a bright red button with ‘RESET’ written on it appeared in front of them. Sans barely had the time to notice Killer’s eyes go wide and wonder why that was before the human pressed it.
Sans stumbled onto a snowy path with no grace, alone and lost in an unfamiliar frosted forest. Snowflakes slammed harshly against his bones. They looked so delicate and yet he could swear they left a thousand tiny cuts on him. It was torturous… and yet familiar.
That was the power of a human. No. That was the power of an anomaly.
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or, Fresh out of the Void Color stumbles upon Something New. And, in his attempt to help, he perhaps bites off a bit more than he can chew
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Distant Souls by Kaboom91
Fandoms: Undertale Yellow, Undertale (Video Game), Deltarune (Video Game), OneShot (Video Game), Heartbound (Video Game), Ib (Video Game)
02 Jul 2025
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The soul is an important part of a persons identity, the accumulation of a person's being. But different worlds play by different rules, so when a force trapped between worlds starts tampering with those worlds, things start to come apart. It'll take the help of a Fun Gang, a Savior, a young girl, a boy looking for his dog, a small cowboy seeking justice, and an incredibly determined human to save all their worlds from the ever looming darkness.
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Once fallen, they never return. by RottenFl4wers
Fandoms: Undertale (Video Game), Mahou Shoujo Madoka Magika | Puella Magi Madoka Magica
02 Jul 2025
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After the war between humans and monsters, the world forgot magic — until the underground became home to those whose souls reflect both light... and hatred.
What path will they choose — pacifism, vengeance, or oblivion?
Kindness may fade into apathy.
Determination may rot into indifference.
And magic... may become a curse. -
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What if Kris wasn't the only human in town? What if these other humans happened to be six certain human SOULS? And what would happen if these humans joined Kris and their friends to the Dark World? Could they be the foretold heroes of destiny, or destroy the very world itself... [Spiritual sequel to Grouptale!]
Series
- Part 2 of Grouptale
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Salt And Simphony. by AsturLionheartNoSeimei
Fandoms: Salt and Sanctuary (Video Game), Monster Girl Encyclopedia
28 Jun 2025
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Más allá del abismo en el fondo oceánico o los brillos celestiales, se abre la existencia de un nuevo mundo cuyos Dioses son distintos a los que fueron una vez conocidos.
Permite al Señor de los Sueños contarte la historia de una Inquisidora, marcada por la Magia, y de un Náufrago guiado por su Determinación, que desean encontrar un motivó para existir en este nuevo mundo donde los monstruos son una amenaza muy distinta de lo que esperaban.
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Deltarune: Rerolled Rulership by Mari_the_Homestuck
Fandoms: Deltarune (Video Game), Undertale (Video Game)
23 Jun 2025
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While looking for supplies for a group project, Noelle and Berdly find themselves trapped in an alternate plane within the closet. Despite the circumstances, the two of them remain calm and meet with a strangely familiar figure within a complex buried under hundreds of feet of ice.
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An Undertale AU with my OCs(And some Undertale Yellow characters) inspired by OMORI.
I REWROTE THE PROLOGUE FOR SOME REASON, NOW IT'S DECENT!!! -
Desert Sanctuary Guidebook by KarmaSpidr
Fandoms: Undertale (Video Game), Undertale Yellow (Video Game)
21 Jun 2025
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Clover doesn't give up his soul because justice still needs to be delivered.
The Wild East, and later practically the entire Dunes, declares independence. They declare that any human within their borders is under their protection.
Civil War looms over the Underground.
Would you like to see what happens?
Note: This is NOT a story. This is an archive containing information about my AU, Desert Sanctuary. I might write a proper story in the future, but for now, this is where you can read about the narrative, the characters and how this massive change affects Frisk's journey.
Fanart and other fan works based on Desert Sanctuary are welcome and encouraged
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Imagine if the person who fell to the UNDERGROUND wasn't Frisk? What if it were someone completely different, someone in control of not only their choices, but their powers as well? Meet Grace, a young adult who just happened to be walking through the woods the same day Frisk decided to fall. Grace managed to SAVE Frisk from their usual fate, but only in exchange for hers; Grace falls down into the UNDERGROUND. As she makes friends and walks through the UNDERGROUND, read to see how a different character might have made her decisions on the same path an innocent child took - and how she might ruin it.
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It's been six years since The Barrier was broken. Ebott has adopted monsterkind as its own, letting them settle in the tiny country. The re-discovery of magic has revolutionized technology and development on the Surface, with Ebott being in the middle of it. The future seems bright, humans and monsters are bretheren, and the world just keeps getting better.
You couldn't disagree more. Will anyone be able to change your mind? A certain scarf-clad skeleton certainly thinks he will.
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SoulShift [Undertale/Deltarune) by Lotie_The_MysticMagnificous_Chimera
Fandoms: Undertale (Video Game), Deltarune (Video Game)
09 Jun 2025
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Long ago , there are two races Humans and Monsters.
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LET'S CUT THAT OFF SHALL WE?
THE STORY YOUR ABOUT TO UNRAVEL AND SEE ARE NOT AS YOU MAY ASSUME
YOU DON'T PLAY A PART OR CHOICE IN THIS NEW WORLD
I HOPE YOU WOULD ENJOY WITNESSING FAMILIAR REALITIES THAT CONVERGE
IN A NEW LIGHTsigned , The Man who speaks in hands (ovo)
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Hush now, little one. I have a story to tell. A story about humans and monsters.
Frisk Estrella lived on the surface, and was just one face in the crowd of thousands within the large city. Buckling under the pressure on his home life and internal forces preying at his mind, the last think Frisk wanted was to end up being on the run from the cops. Unfortunately, some don't get a happy life.
After a confrontation leads the boy wanted for murder, Frisk ends up in the bottom of Mount Ebott, where he discovers a civilization of mongers just below his feet. To anyone, they would be horrified, and would try and venture through to leave.Frisk however, finds himself growing familiar with this place of monsters, and soon enough, thinks about staying. But as he makes friends and allies, hundreds of years of history begin to rear their heads as Frisk must confront enemies that could threaten not just the Underground, or humanity, but the very nature of existence as well.
In order to save his friends, and himself, Frisk must have DETERMINATION to survive.