Undertale AU Story Ideas/Prompts (Not One Shots -Usually)
  • Reads 2,557
  • Votes 33
  • Parts 53
  • Time 1h 15m
  • Reads 2,557
  • Votes 33
  • Parts 53
  • Time 1h 15m
Ongoing, First published Feb 16, 2021
I have way too many of these that I'm never going to write (Specifically ones about Nightmare tbh--) but I'd love to see them made in to stories so feel free to use any of the ideas as long as you give me credit and make sure that I know of the story's existence!
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The Boy Who Doesn't Speak (Sans AUs) -- BEING REWRITTEN by SKSuperKitty
18 parts Complete Mature
For some reason, Ink, the Creator and Protector of the Sans AUs, has decided that some of the Sanses of the Multiverse should go to highschool again. Honestly, no one really liked the idea, especially the Bad Sanses, including Ink's enemy, Error. Prince Nightmare is one of the AUs that must repeat these years of treachery. He basically only finished his actual highschool, and is NOT looking forward to having to do it again. Luckily his brother, Prince Dream, will be coming along the journey beside him. But Nightmare and Dream Are polar opposites, so Nightmare can't really get along with his brother's friends, nor Dream get along with Nightmare's, if he had any. With rules to follow and secrets to keep, Nightmare must go through highschool and not let slip the terrible things that happen at home. But then suddenly the two princes disappear. There's no trace as to who might've taken them, either. The only one that doesn't seem concerned is their own father, the king. King Sun-Beam. What is he hiding underneath all of those jewels and fake smiles? A/N: There is lemon/smut. So all you innocent people out there-- don't worry! Because I warn you at every chapter, and right before it happens. I designed the cover, but did the not the amazing artwork of Nightmare Sans. So credit goes to that person for the art. :D Update!!!!: This story is being rewitten. I'm making another book that'll just be this one but a little different. Once that's posted, I'll make another "chapter" in this one, giving a link to the rewrite. Thank you to everyone who still reads or checks up on this book. <3333
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Slide 1 of 20
Sanscest One-Shots (old) cover
Our Little Toys cover
AU Sanses x Reader Oneshots/short stories cover
SANS AU {ONESHOTS} cover
Yandere Au Sanses [Discontinued] cover
The Boy Who Doesn't Speak (Sans AUs) -- BEING REWRITTEN cover
Idea Factory cover
Diary of a Chara cover
Walking These Halls cover
The Enemies Maid (Ink x The Bad Guys) cover
This life as Error Sans. cover
Errors new puppet (Undertale AU horror story) cover
Inktober but it's written stuffs cover
Sans AU's Random Oneshots cover
Error on shorts cover
Mama Nootmare (A fanfic with the bad sanses) cover
Inkwhumptobertale 2023 cover
CRIMINAL AMNESIAC cover
When Worlds come together cover
My Little Killing Machine (NightInk and ErrorInk) cover

Sanscest One-Shots (old)

27 parts Complete Mature

This is a bunch of Undertale one-shots. And a bunch of Undertale and Undertale AU ships. Most of these ideas I wanted for books but, don't have enough time nor ideas. The cover isn't mine. Also, all of the characters aren't mine. I'm just giving them the credit even if I don't know all of the creators of the characters.