"Long ago, two races ruled over Earth: Humans and Monsters." One race feared for their strong souls, the other for their magic, and the mages caught between them feared for both. All silently knew that war would be inevitable. The only thing that mattered was surviving it. One crimson mage understands that well, and is determined to keep herself and those she cares for alive.

After falling into the Underground, Frisk is found by a young Monster and taken home, where they find friendship and family, and make a new life for themself in the Kingdom of Monsters. But despite the happiness, something lingers in the back of their mind, and soon, they find a way to repay the kindness which they have been shown.

This is a sequel to my old story, Integritale, which you will find in my profile. I don't know if this could be considered an AU to the Undertale Universe, since I did add a lot of stuff, but still tried to adhere to the canon as much as possible. In any case, please, enjoy! Any feedback is welcome!

The story is set in a generic alternate timeline where Frisk said "Nah." and brought Asriel back to the surface anyway. Asriel, thrown into a middle state between the adult form he had exhibited before and the child form of his past, has adjusted fairly well, as did most of the Monsters that chose to move aboveground. Meanwhile in the Underground, a new faction has appeared.

Short stories set in the VOXISTALE universe.

"El jugador" ha muerto... Y ahora todos quieren JUGAR. En la peligrosa Ebott City, radica una constante inconformidad por habitar monstruos y humanos en un mismo lugar., desatándose conflictos delictivos que atentan con la vida de los habitantes. Sin importarle las advertencias de su madre, Frisk decide ir a la ciudad y tener su florería junto con su compañero y mejor amigo Flowey

In a reality where existence is a jigsaw puzzle of shattered worlds, a certain doctor has survived the collapse of his own universe and now embarks on a mission to build something new. Join one W.D Gaster utilizing the Observer, a creation of his own design, and navigate a realm where perfection is a mirage and every piece of a broken world holds the key to a bold new beginning.

The butterfly effect is known as "a property of chaotic systems by which small changes in initial conditions can lead to large-scale and unpredictable variation in the future state of the system." The smallest of changes make the largest of impacts. So… What if when Angel and Frisk fell… they fell into different locations? Squeal "One World, Two Souls", and "One World, Many Souls".

Deltarune, but with Muffet. It's very short because I want to go to bed. Also it wouldn't let me pick Deltarune as a category. Sorry.

Gaster lost count of the days since he first entered the Void, but since that day, he had watched and analyzed each and every timeline there was. Just a few more resets, he calculated, and the timelines would start to mix. Worse, they would start to destroy each other. He had to make things right, stop the resets, and to do that, he had to leave the Void. UPDATE 2024: NEW EPILOGUE!

This takes place after the genocide run, where Chara will be fighting with Frisk. Also Chara and Frisk are both girls in my AU and Frisk talks lol - deisu As the future awaits, what choice will Frisk takes? RESET? SAVE? we'll find out in GenoFist Tale! (also I don't own the picture cover! credit to the og artist ;3)

THE END AND BEGINNING ARE ONE POINT IN DARKNESS. It Was The End. It was The Beginning. Every World is collapsing, and one is the Support. Holding every timeline, every consequence, UNDERTALE's World is in for a rude awakening. The Three Heroes set out to find the root cause of this mess, with one clue, "Banish the ANGEL'S HEAVEN." But in the end... Do their Choices Really Matter?

For Monsterkind, the Surface represented freedom. For Frisk, it's a return to some uncomfortable realities. It all began with a simple wish. When that wish faded, Frisk tried to move on. Except, 'moving on' was not so simple. Emerging from the Underground had put them in a worldwide spotlight. From an unknown child, they had become an icon of great value.

In a scrambled timeline, Frisk has carved a dusty trail through the underground countless times, and a scattered scientist has had enough. He gambles on pulling a human from beyond his reality to try and finally stop Frisk. He's hedged his bets on...this sleepy-lookin' girl lugging around a bootleg sword to go fight a squinty kid in her pajamas. This timeline's doomed.

Just because your father is "Renowned Scientist Dr. W.D. Gaster" doesn't mean everything in life goes according to plan. Corbel H. Gaster knows this entirely too well. If trying to balance school, friends, and a life-altering disease wasn't hard enough, Corbel must also face the pressure of living up to his father's legacy. AU story for "The CORE of the Matter" CONTAINS SPOILERS!

After the death of the sixth human, Toriel makes a desperate request: seal the entrance to the Underground. Sans reluctantly agrees, but stopping Frisk's arrival sends the system into chaos, and the soul of Determination finds a new host—Sans himself. Now burdened with immense power, a destruction-hungry phantom, and an unquenchable thirst for Determination, how will Sans navigate

Eran las primeras vacaciones que se tomaba. Sans pensó que serian relativamente tranquilas, claro, si se ignoraba los gritos de su hermano, Papyrus, y el enamoramiento de este con Frisk; la molesta y deportista Undyne, intentando que se levantase del sofá y moviese el esqueleto; además de la familia Dreemurr, conocia a Toriel, pero sus hijos eran otra cosa. [Chara x Sans] Resubido

A Multiverse Phenomenon drags Nightmare to a place that should be unreachable. Yet it changes the course of this Multiverse irrevocably.

At the end of the war, monsters don't have the choice : they have to join Mont Ebott for survive another day. Sans and Papyrus, forced to run away after the attack of their village, are delivered to the horror of the war without any help and this one objective. But as sons of the royal scientist, W.D Gaster, they are an easy target. Both of them start a dangerous journey.

There are thousands of legends about the Underground, most of them telling the story of the human who managed to break through the barrier and free the monsters. On this occasion, it is time to go back in time, a story that is thought to be abandoned in the face of existence, one where we are presented with a new name, a new soul, a new identity, but the same righteous ideal. Is t

It's only thanks to you that I could change from a sadistic ogre to what I am now. I feel alive for the first time. I can't thank you enough, but I can write down my story. - This story follows Frisk and Chara from a genocide run to a truly happy ending!

After Chara is freed from the Void, reunited with her friend, Gaster, and gone through a Reset of time, she must now help guide young Frisk through the Underground, showing her how to get through without harming anyone. (Female Adult Chara, Female Frisk)

Asriel didn't deserve this. To be back, to be nearly himself again, to be able to feel. But it was only because of the souls inside him. When he was about to release them, a voice made him question everything. The human children who died because of the fury he had caused wanted to live. He would right that wrong, no matter what. But bringing them back wasn't as simple as he thought

Littleverse: a multiverse in which most, if not all, of the main characters are children. Small children. Some of which have never had parents to guide them. FMD Ink: a psychopath. What will happen when these two forces meet? Well..a lot of adoption, fluff, and angst, apparently. We do not know how this happened. Go check out Clichély on AO3 and Wattpad!

A human who was once tainted with hatred and distaste for monsters has started to see the wrongness of her actions when she had gone to Aynor Village, the last monster town damned to be liquidated by human hands..