Seven friends fall into Mt Ebott together and end up in the kingdom of monsters. They must work together to make it through the Underground and make it back home. New friends will be made, battles will be fought, mysteries will be solved, and dogs will be pet. Follow them on this adventure. (Rated T for potential swearing and/or gore)

Sans and Papyrus had been living life peacefully for a while now. After Sans starts to try and shift Papyrus' interests to something else, a human walks into their life. While the human IS a problem, they could also be Sans' solution... But then new problems could rise from having a human around...

Doctor Sans is working with Doctor Gaster and Alphys to find a way to free them all from the underground. The last thing they need is one more human soul when a human does finally fall into the underground San's has his chance, however when it comes to the thing Sans so desperately needs will he choose his heart or his freedom? [FEM FriskxSans] [Scientist Sans AU]

Do skeletons give good hugs? I assume they do, but I asked my oc to find out! She traveled to the lands of Undertale on scientific business and...Wait, you'll just have to find out! (oneshot, and the Dear Della series won't be limited to Undertale.) (Rated k simply because Della is a vampire, but that's not important to anything.)

Happier version of Halwaffle's Their Story

Papyrus is sick with a seriously bad virus unique to skeletons. All Sans wants to do is take care of his little brother but because of his low HP he is in danger of catching it and getting terminally ill, so they have to be kept apart from each other whilst the virus runs it's course...something that Sans cannot stand...

Frans UnderVerse adalah sebuah kumpulan cerita pendek antara Frisk dan Sans dari Timeline yang berbeda-beda. *Chapter 1 & 2 Remake

As the monsters finally are set free underground, Frisk ushers in a new era of relations in the modern world. Asriel also enters the fray once more as he is revived through lucky happenstance. Despite best efforts, the monsters and Frisk are met by enemies who harshly vocalize their opinions. Along the way, society evolves to a state never observed before, by monsters nor humans.

Sequel to "There Goes the...Underground?" After the barrier is broken, the underground dwellers are eager to explore the land they dreamed of. However, the political clash between monsters and humans severely hinders their progress. Meanwhile, Sergio gets a sudden awakening from an old "friend" of his. Will Sergio follow his counsel, or will his pride spell doom for everyone?

A prince and a servant boy learn that love is the most powerful force in the world—strong enough to withstand heartbreak, abuse, and even death itself. Papyton human fairy tale AU, based on Disney's Cinderella (1950), Cinderella (2015), and Cinderella III: A Twist in Time.

This year's halloween costumes. edit 15/10/19: gave it a title which is a play on "super mario brothers"

In the dog days of summer, a happy event sparks a terrible realization in Toriel regarding her immortality and the future consequences it could entail. She knows there is only one way for her to age again, to avoid such a fate. But things are no longer as simple as they were over a century ago. (Soriel, Sequel to All These Broken Pieces)

I'm sorry.

When Frisk finished her story, barrier broken and monsters freed, she knew there was still a loose end, but she never expected everything to come unraveled before her eyes. Determined to save the only family she's ever known, Frisk must stitch their lives back together after they are ripped apart at the seams and then attempt the impossible to stop it from ever happening again.

Goth child of Reaper and Geno gets written out of existence. somehow the one Goth survived a combination of all Goths, only able to survive in the anti-void. Well at least Error takes cookie bribes well, mind you others reactions to himself were amusing. Now if only the 'bad boy' Sans were not the only ones to remember him. Sadly Reaper not included in this group.

When Underswap Papyrus goes to visit his boyfriend he learns about something that is scary going on. He agrees to help find and talk to Underfell Sans before something serious has the chance to happen. So they search. Will they find him in time to save his life or will help have come far too late for Underfell Sans? Spicyhoney / Bloodorange . Though the ship is not the main focus.

Chara finally defeats Sans, after dozens of resets. But then, something within her starts to stir, giving her a new view on life... (One-Shot)

The barrier is broken. Monsters are free. But, the celebrations can not last for long. A new wall of obstacles will present themselves. It will take great determination from all parties involved to conquer them.

Sans tried everything to stop them. But even his ultra form and dusting his friends didn't work. Yet even after 99999 genocide paths Flowey and Sans have a plan. The only question is will it work? And if so what will be the consequences? And will Chara get a second chance? (Also this is an au of undertale.)

When Mettaton became king, he planned on building statues of himself, holding lavish parties, and generally making the Underground his personal paradise. When Papyrus became the king's agent, he planned on wearing suits, making phone calls, and serving his king to the best of his ability. Neither of them planned on falling in love. Nor did they plan on what came after.

What happens when depression leads a Undertale writer to play video games to feel better till she ends up hooked on Dead by Daylight? You get this weird baby! Not sure if this counts as a full AU for Undertale or is a crossover. I need help sorting that out. It's essentially Dead by Daylight with the Killers as the Monsters from Undertale/AUs and Survivors have colored souls.

Undertale with my O.C.. Spoilers to true pacifist ending. O.C.XFrisk.

You fall down. (There are monsters here, monsters whose souls you found as beautiful as the ones aboveground. They open up to you, and you find yourself regaining the family you've never lost.)

After so long of letting Sans take care of things, Papyrus decides to take back to the role of older brother, and Sans isn't to happy about the way he does so. Will their friends be able to ease Sans into it now what Pap is basically broadcasting his brothers actual age. not the best summery. Please contact me if you wanna adopt, the story isn't done, but id like it to be.

Sometimes, the echos don't want to die and carve themselves somewhere else.  Translation from French to English of my UA very inspired by "Flowerfell" and the fanfiction "Overgrowth" written by SociopathicArchangel. I ask, and get, the permission to make my story from siviosanei, and it's solely inspired by their work, I don't try to write in the Flowerfell universe.