It seems like, just as the monsters of Underfell have made it into the light, issues long buried are slowly being unearthed as well. Issues of lost friends, resentful little children, demons, and unstable dummied-out space. And to Undertale, the problems of Underfell are infectious. A continuation of The Many Worlds Theory Sucks and sequel to This Game is Too Hard

A Deltarune and Undertale story, Kris, Susie, Ralsei and Lancer has been sucked into the Undertale world, but things starting to get bad as something unknown is coming.

With the barrier broken and monsters making a place for themselves above-ground, there isn't a lot of conflict in the Kingdom of Monsters anymore. The Undyne of the Underfell world just might have to find it elsewhere. ...Like by teaching her alternate self a lesson, maybe. Meanwhile, the Alphyses of both worlds are seeking awkward love. Features Underfell AU and Alphyne ship.

As an attempt to get revenge on Monika, MC puts her character file in his very own horror game...to torture her, and to make things more horrifying for her, he adds the “corrupted” versions of Yuri, Sayori and Natsuki...just to make her remember what she did. From inside the game, Monika needs to try and find a way out of this world that MC made. Can she survive?

It's Unbeatable Defense vs Unstoppable Offense. Today/Tonight, we've got the hero who wins every fight with one punch against the villain who comes back from death itself. Chara, the demon of Undertale, and Saitama the One Punch Man. Will Chara's genocide come to an end, or will Saitama truly meet his match. It's time... for a DEATH BATTLE! Enjoy. Rated T because it's Death Battle.

Sequel to "Undertale: Brave Heart". Its been a year since Vincent's journey through the Underground and when he thought all was well he soon finds out that his (human) friends have been taken by a destroyer of universes. He then decides to team up with Ink Sans a protector of the AU's and races through different worlds to save them.

Every year; on the day when the Hueman Sisters were found and adopted by Asgore and Toriel, they would through a ball with a great buffet and dancing. Ralsei asked Kris out to the ball, but she must conquer her fear of wearing a dress. Frisk even asked Flowey to dance with her there. Everyone is worried about the Hueman Sisters strange behavior lately. Will everything go well?

Based on Super Smash Bros. series with genderbend heroes and villains. Join Clemont and the others to fight against each others with their sexy tactics. Many adventures, some romance humors and some fun.

Sayori has a little... problem. Well, no, not a little problem at all. A big one, actually. One that can only be solved by the Literature Club; a club that's not at all what it seems. Warning: lots and lots of futanari smut! Please. let me know if you want to read more!

my new undertale perverted series!

Freak encounters and otherworldly relationships follow Frisk and her companion Flowey back into the completion of her run. Seeing what could be, all the child wants is the ending that she saw in another world. But the game she plays wasn't really designed to end happily. Was Sans right after all? A continuation of "The Many Worlds Theory Sucks". Features Underfell AU.

Vincent was 19 when he dropped out of college. He moved to New York City in hopes of a fresh start. However, 3 years later he gets a phone call at night from his mother saying his 14 year old sister Izabella has gone missing. Vincent returns home to California to help, but he soon discovers something he never believed existed and something about himself he never knew.

(Please keep in mind this is a parody!) Dedede, Bowser, and more! This thrilling fan fiction featuring drama, sex, romace, boobs, and characters from the Super Smash Bros. game! Please like

Robyn wakes up one day with a strange appendage between her legs and is horrified. She goes to Palutena for advice only to find out that she has been blessed with her very own male reproductive organ! But does it work? They're about to find out! Contains futas, mature language, yuri sex, Fem!RobinxPalutena, and for the love of god keep your children away from this story.

random stories about sex in the super smash bros mansion. All characters are fictional. Anything that happens does not reflect into the real world. Samus is literally part bird. The characters don't adhere to the physics we know. So strap in and shutup.

Why do some people have happy endings and some don't? Is it because some people 'deserve' one more than others? Does the same apply to worlds? A Sans from one world is about to find out, as he steals the happy ending of another. Now everything's messed up. Another Sans doesn't know if he's cut out for this, sounds more like a job for a proper protagonist. Features Underfell AU.

Essentially writing doodles that I do of Undertale, most of it with a Pacifist or Neutral Frisk. Some take place during the events of the game, some after, some before, and some might have an AU attached to them which I'm too lazy to explore in a larger fanfiction. (I'm sure you already know this deal from countless other fanfic authors.) Updates will be sporadic.

The happy ending everyone thought they got is marred by Toriel's untimely death. Unable to fix it, the most that Frisk can do is try to solve the mystery with their friends. And as more and more deaths begin occurring in New New Home, the child will... probably try to solve those too? Nothing is going the way that they thought it would. But, surely... Rated for violence.

The heart of a pacifist is put to the test, and so is the game's coding, when the child returns to the underground. Their aim was the Core and its creator, but that was only the first step and arguably the easiest one. Borrows from the Handplates AU. Rated for violence I guess I mean Frisk is the only one that bleeds