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Undertale
58 stories
Sooner or Later Mafiafell Sans x Classic Sans by SimpsinClown
SimpsinClown
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    Parts 5
A story where OUR Classic Sans gets stuck in an au where mobsters lived and meets a different Frisk and a version of him. Will there be romance or fire along the bridge. Will Sans get home and leave Frisk alone or stay long enough to romance another version of him on accident. [I loved the comic/story of Sooner of Later You're Going To Be Mine but also hating the Frans portion of it]
Reborn in Dusttale: The Twat in the Hoodie by sp0okyGh0stWriter
sp0okyGh0stWriter
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    Parts 56
(Art by @zuttoyonoturn69, can be found in X) Disclaimer: English isn't my first language, the protagonist is British, I'm sorry💀💀💀 Levi is a man who transmigrated into the body of Dust Sans variant, but with only LV 5. Now he has to figure out how to survive a murderous child who may or may not be possessed by Chara, or dude with far too much free time, and possibly even skeletons from other worlds.
Reincarnated as Error Sans (SANSES X READER) by m0xical
m0xical
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    Parts 6
After dying, you found yourself trapped in a white, endless void. You thought this was your afterlife: a tragic representation of how you felt trapped all your life; however, you noticed how your hands were... boney...? What the hell is happening? ERROR(READER) X SANSES DISCLAIMER: - MATURE CONTENT & VIOLENCE (Death, Killing, Violent language) - NONE OF THE ART USED IN THIS STORY IS MINE! CREDITS GO RESPECTIVELY TO THE ARTISTS (I will add credits later, as I go, when I find who created them)
Scrubbing Out the Stains by broskiskillet
broskiskillet
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    Parts 17
The multiverse decided, "Ayo, Imma need to make a whole other living thing to handle this Balance shit yo." Though there are restrictions, your boi is out in town and ready to get their ass kicked bro. No Romance Cover Art by me Contains an OC, and is OC-centric. Cross-posted on ArchiveofOurOwn User: FieldFlowers Inspired by Fresh New Antivirus by Hidden_Ajinn and the idea of Forced God of Destruction Error by Harrish6
ERROR ONE-SHOT  by yaoilover3173
yaoilover3173
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    Parts 2
A series of one-shots Involving Error. It will range from fluff, smut, or random ideas that come to my brain at 3:34 am. Enjoy!~ NO PICTURE IS MINE IN THIS BOOK!
A Miscalculation In Space by Readern111
Readern111
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    Parts 20
He knows he'll be dooming them if he falls, but he's tired, his body is breaking apart, held together on a higher being's whim only. He wonders if there'll be another to replace him. He wonders if there will be none. It's rather silly, really, since he won't even be around to witness that. The crowd, the rage and bloodthirst palpable in the air will ensure that. If he does not fall on his own, others will force him to. Or, in other words, the typical start of Error being forced to jump into the Void one way or another, in this case into the NaJ universe! The cover art belongs to irodimmatcha on deviantart(will take down if the artist asks me to)! Updates will be highly inconsistent. Edit: Now cross posted on Ao3 under the same username!
I Was Reborn As Asgore, What should I do Now? by Originalsparkstar
Originalsparkstar
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    Parts 7
After dying in the hospital due to complications in surgery, an Undertale fan finds themselves sitting in Asgore's throne room. Where they have no idea where they are in the timeline or if they're in an AU or a Classic timeline. How will they cope with this change, and what changes to the story will this make?
wHo wOuld KnoW by InkPaperCrane
InkPaperCrane
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    Parts 15
So guys you Maybe expect here a Descripion but here will be non becous im really bad at something like that, but i can say thats not a FGOD story! i do like thos but there are too much of this out there and i rly miss my Error who is Mad Insane. here will be maybe a ship like ErrorMare but i still dont know so we will see and English ist not my first Language so i will try my best to writh this story well [All the Characters and AUs used in this Book belongs to their respective Creators ] [All Pictures I us are not my and belongs to their Creator's]
Killed it! {Reincarnated as A Killer Varient} by coolkidindahood
coolkidindahood
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    Parts 18
⪼Beaten up and betrayed, {Name} dies an unfair death because of their best friend. Having their life and their brothers whisked away in a flash. ≫They find that they inhabit a certain skeletons body, trying to live happily before having their murderer breathe down their neck each second. ≫Its up to {Name} to figure out whether they want to join the good side, or the bad one. {"𝙸 𝚑𝚘𝚙𝚎 𝚢𝚘𝚞 𝚋𝚞𝚛𝚗 𝚒𝚗 𝚑𝚎𝚕𝚕 𝚢𝚘𝚞 𝚍𝚎𝚖𝚘𝚗 𝚌𝚑𝚒𝚕𝚍."} ⧼Reincarnated as Killer sans variant Story!⧽ ⚠︎Warning.1 ! This story contains no ships⚠︎ ✐Simple terms; ✂ Flirts are contained, but will not have any feelings attached to it. ✂Blushing is NOT in a romantic way in any way ✂Physical affection is all platonic. ⚠︎Warning.2 ! This Story contains spelling mistakes, and poor grammar. English is not my native language.⚠︎ {COVER MADE BY ME!!!} __________________________ Ranks; ➫ 19/05/2024 - #1 in; Multiverse. ➫ 15/06/2024 - #1 in; Chara. ➫ 23/12/2024 - #1 in; Badsanses. ➫ 08/01/2025 - #1 in; Undertale. ➫ 24/01/2025 - #1 in; SansAu. __________________________ Started; 03/04/24 Ended; ????
Not really a skeleton? by Luna3464
Luna3464
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Ace is a normal Undertale Otaku on her way home from Undertale convention she somehow ended up in Undertale. what will happened to Ace when all sans think she's just another AU? A sexy and badass AU. That all Sans's want to jump 'his' bones. A/N [Please note this story is posted on my AO3 account so please don't leave a negative or complaint comment about me stealing my own work]