Undertale AUs
48 stories
Chesstale Sans x Female Reader by WolfSans88
WolfSans88
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You have already been through a pacifist run for normal Undertale after curiosity about Mtt Ebott, but something doesn't feel right and when you get to the surface everything goes wrong so you do the only thing you can think of and have Frisk reset. You end up at the beginning of the game only to realize Frisk isn't there and the monsters aren't the same. They are chess players. You are curious about what Sans would be like here, and unexpectedly fall for him even though in undertale he was more like an older brother kind of guy. White moves first, so you have to make the first move the entire time and hope to win the game.
Brotherly Love[Underlust!Sans x child!reader] by SoupKin
SoupKin
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Their cold, dead eyes stared at yours. Why hadn't you done anything...? "I Hate You." [cover art doesn't belong to me, I just edited it]
Getting Better Together by ToxicityT
ToxicityT
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hello this is my first story on here, sorry if it's not good.... I'll sum up the story now... Y/N (Your name) have been in the city for a year now and still alittel new, you do have a nice payed job down the street,you pay rent on time and made a few friends...(only 2) But you have problems being alone,you are used to being with your family but now you live alone in your apartment. Your thinking of geting a bittybones from that store,but are you really responsible to take care of a bitty? *sans's story* Sans has gone through alot of trauma from humans,and still doesn't trust humans and think they use him for fun. Sans is the most layed back bitty,but if a human comes by him, he'll never take his eye of them. But can Sans ready to try and trust humans again with alittel help from one?
Daughter of Death  by ItsSwapPapyrus
ItsSwapPapyrus
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Cover artist: punny-puntasy ! (TOLD IN YOU/YOUR) A reaper, a few gods, and a bunch of skeletons. The life of a reaper wasn't boring to her, everyday she would gather souls and lead them into eternal rest, and repeat. She watched creatures and Humans die, easily surpassing their lives and meeting once again in the underworld - or when she is evaluating their lives. One day, Y/N was told she was moving areas. A whole new continent in the world, in a city known as Ebott, where monsters had emerged from the mountain nearly five years ago. What happens when a workaholic with stubbornness to boot moves in the neighborhood, with skeletons causing havoc in her life? And, uh, well.. let's say she isn't the easiest person to get along with. *updated story description* *Highest rankings* 7th in 'Underfell' 17th in 'Swapfell' 10th in 'Undertale'
The Bone Warrior (Sans x Female Warrior Skeleton) by Lunargal624
Lunargal624
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Your name is (y/n) and you have lived on the surface as a royal guard for the science department in the monster areas. Your species is skeleton, there's still a good amount left of the skeleton race but then the monster side of town broke into chaos and war. You were manning your post when you see humans running after innocent monster childeren and their families. You instantly run towards the humans and start attacking them but you quickly get overwhelmed by all of them and the gunshots that you've just barely managed to dodge. You start running to buildings to get out innocent lives from the fires that are now spreading through the town. Your actions lead to hundreds if not thousands of lives saved that night. You were one of the last ones out with the other guards just in front of you. With your magic you manage to hold off humans attacks from the monsters that are heading to the underground that is supposed to be a safe haven if this was to occur. That's when you get hit by a rock in the back of the skull. This book is about a long lost skeleton warrior in the game known as undertale. (Not cannon of course) I'll be using (y/n) as her name so you can choose it to be your own name or a chosen name. All rights are reserved as far as the images I've used and of course undertale the game itself. If I do mess up on something, do not hesitate to tell me. I am all about constructive criticism. Lastly, there is a no hate policy. If you are one of those assholes who thinks it's a great idea to say you people are sick for reading this then why are you even searching things like this in the first place? Lastly, there may be some adult writings in this book, if you are innocent, stay innocent but if your not or your willing to give up your innocence then come on in and join the party. Anyway, if you did read all of this, thank you a lot. It really means something to me.
Move the way the music flows(Dancetale Sans x Reader) by Fantasy_is_Emo
Fantasy_is_Emo
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As a little kid Y/N was drawn to hip hop and was always looking for someone to challenge.So she resulted to DANCE battles!She had become popular for her dance moves in her small town near mt.Ebbot. ~years later~ A little kid named Frisk had freed all monsters from the underground.But Y/N never particularly cared for them she went with her business and monsters went with theirs.That is until she was drawn in by her favorite songs to meet the dancer Sans himself.Who was well known for dancing in the underground.Being the competitive girl she is,Y/N challenges Sans.But will she loose her title to him or will he be the next to loose to her?Will a friendship bloom?Or something deeper?Can one short dance have a memory of a thousand words? Find out! Disclaimer:I don't own the cover art and take no credit for it.I also don't own dancetale.The only thing I do own is this story and it's chapters. A/N: I hope you all enjoy this! If you did please show some love and tell me! It would be greatly appreciated! Love ya my Candy Kits~! (If you're not a candy kit don't worry I still love ya :3)
Life in the Eyes of Death (Discontinued until further notice)  by CheeseCake2021
CheeseCake2021
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Reaper!Sans x Mortal!Female!Reader You are just a normal person. Nothing special. You breathe, you eat, you live and...one day, you'll die. Everyone will forget you and probably just walk over your grave-literally. But that never really bothers you. PS. This is my first story, so don't expect anything special, gonna make a cover for this later probably and lastly, I'm writing this to practice myself in finishing stories that I write and tell them to the world. Cuz that really sounds better than letting it collect dust in my head and just be forgotten.
DISCONTINUED - Just Strumming Along || {Reader x AU! Sans} by galaxcoffee
galaxcoffee
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When (Y/N)'s grandma passes away, she moves in her grandma's beach house in Oahu with her ukulele. But what happens when she plays that ukulele by the sea and a "portal" is created? What happens when VERY similar skeletons pop out of that portal? What happens when she is sent to other AU's? And what happens when she catches the eye sockets of various skeletons? || Cover art belongs to black-nyanko on Tumblr || © Toby Fox owns Undertale and all characters in it.
A Little Love (AU Sanses x Shy! Abused! Powerful! Reader) by Kittysnbeinlazy
Kittysnbeinlazy
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E-Enjoy!
The Christmas Party [Undertale Au's x F!Reader] by _Sansational_Sans_
_Sansational_Sans_
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[Undertale Au's x F!Reader] Can be found in my Quotev Account --> @.FanboilingTrash | AO3 --> @.FanboilingWriter | Tumblr --> @.bdudette When Blueberry and Stretch invite their Human friend to the Undertale Au's Christmas Party? Hell Freacking Breaks Loose! [Credit Creator of The Christmas Party (Tumblr - loverofpiggies) and AUs Papyrus & Sans x Reader (Christmas Party) (@.ABSIND)]