Thanks to a visit from an alternate Gaster, Frisk now has the power to heal the AUs, but something is trying to stop her. Can she succeed in her quest? Done as a request for dream1990. :)

Human magic before the Barrier was achieved through the Cooperative Connection, a bond wherein a monster gifts his or her memories, and thus a part of their soul, to a human. Discovered when Queen Toriel gifted a blind prince a blanket which she weaved in her memories of describing the starry sky far above her castle in the Monster Capital.

it's been 25 years since Captain N'ation disbanded MX18 however with the growing threat of other military organization/unit's like Snazyu & The Green Mountain Malisha Boys it looks like MX18 won't be staying that way for long.

"Might controls everything. And without strength, you cannot protect anything." A man falls into the underground and finds himself face to face with a demon. But he doesn't have the strength to beat them. In order to protect the ones he loves, he swore to do what ever it takes. Even if it means becoming a demon himself. (Based on XWolf26's DoubleTale)

With a quick use of Sans' magic, we had returned to our home on the surface. The lovely three-story home sat quietly among the trees under the moonlight. Sans always loved to teleport just outside the door and glance at it before walking in. He was a little less lazy since coming to the surface. So much to learn. So much to do. So much to love. SEQUEL TO "TWO WORLDS, TWO SOULS"

"The ninety-fourth reset. That's when he started to unravel—or at least, that was when you started noticing." Despite reaching a "perfect" ending, you still reset in the hopes of saving Asriel . . . at the cost of losing Sans. When rewinding time is no longer a factor and events don't go as planned, can you find a way to save everyone? TW: depression, suicide, self-harm, language

A single choice has a huge impact. Not just on one person's life, but on everyone around them. In the Underground, there are many paths one can take. But when Frisk makes a choice that takes them off all the known paths, the world is changed forever, and Frisk becomes intrinsic to the fate of not just Monsters, but the whole world.

(Being Continued) Down into the dark, Chara fell. Down into the dark, an experiment was run. What if she got to go home? But what if it wasn't to the world as she knew it? What if she was placed into another, at another time? What if that happened to be a version of Underfell?

Tell me my friend. A story as my eyes fall, one last story of how it ends, how it begins... and once its over let my eyes fall peacefully, and then when we meet again you can tell me everything new. "Well... it all began with a tear."

In this universe, the timeline is messed up, no one is nice anymore, and they hate humans. But...is the pacifist route really impossible in such a place? Come in if you want to find out

After the barrier is broken and all the Monsters are freed, Flowey finds himself alone in solitude once more. With no Frisk, no friends, no hope of returning to his former self, he languishes in despair. That is... until he meets a new friend. (In Progress) (Post-Pacifist / Warning: OC!)

A household full of skeletons are competing over the attentions of one love. This isnt that house though. Unknown to the group secretively wrestling with their unpredictable love lives and universe-meddling machine, another house a few doors down has been gifted with its own skeleton posse clamoring for the attentions of their own little lady. A little old lady by the name of Mabel

After thousands of resets, Frisk succeeded in doing what everyone, including Sans, thought impossible: bringing back the lost prince and destroying the loop that was causing them so much suffering. Two years later, now an ambassador, he seeks to restore human-monster relation, while fighting against an evil that seems to be spreading in Ebott and threatening his new family.

everyone is free, everyone is saved. but what happens when a new soul/soul trait is created to replace frisk's old one, the soul of trust what will happen now?

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.

This is an AI story about Undertale. Almost every text is generated by this, but some of them are modified by me, to make the story have more sense or better format. This may contain weird ships, I'm not sure.

one night Monsoon who's married to sailor Pluto has a nightmare in which the aftermath requires the intervention of both Jack/Raiden & JetStream Sam and thats not even the half of it all...

Waking up in a basement surrounded by skeletons that you find extremely familiar is freaky especially when you know you shouldn't be there... ... why do you feel like you're in a fanfiction book right now? (trashy intro)

It has been a month since Frisk has went missing... but for some reason, it feels as thought she has been gone for months. Her sister, Eve, decides to follow in her footsteps and discover something bigger.

Parfois Frisk a juste besoin de se rassurer que le garde-manger sera toujours plein. Toriel comprend. (traduction de fanfic)

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 to get by without harming anyone. (Female Adult Chara, Female Frisk)

DIRECT SEQUEL TO "PATCHWORK SOUL" — A few months later. A family of monsters and their little human kid try to start life anew beyond the confines of a giant mountain. Maybe they find something. Maybe they lose something. Time flows ever onwards, but sometimes it goes sideways, and it's heavier than they thought.

Chara est morte pour la deuxième fois avec Asriel dans le jardin. Mais ensuite elle se réveille à nouveau, pas dans le jardin, mais dans les Ruines, couchée sur une parcelle de fleurs. Mais où est Asriel? Et qui est la fille inconsciente à côté d'elle? (traduction de fanfic)

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!

The monsters never ended up in the Underground, thanks to a person who was half-human, half-monster. She and Sans keep watch for those foolish enough to enter the magical forest surrounding Mt. Ebbot. What happens when Frisk and Chara enter those same woods?