Undertaleau Stories

1.2K Stories

Our Pen by R3myR3ad3r
#1
Our Penby R3myR3ad3r
You're the Ink of your multiverse, and you don't even know it. Well, until you meet the Ink of another, along with Error. -NOTES- I made the cover! This obviously isn't...
Completed
GlitchDust by adamabyss12
#2
GlitchDustby adamabyss12
This is Glitchtale, but the beginning is different. Instead of Sans being his usual self, he turns into himself from Dusttale, where he killed all of the monsters and ga...
An Error's Doll by EroseWisp
#3
An Error's Dollby EroseWisp
You didn't have a bucket list or anything, but you wished you could've at least read a few more fanfics or done literally anything fun before dying. Oh well, at least yo...
A Killer Life by FewCafe
#4
A Killer Lifeby nok_nok
adopted story. original by @Mijunaa :3 - The afterlife of a dead human that reincarnated into a Killer!Sans variant. The facade of the new owner of the body, could he k...
Prisoner...? (Bad Sanses x Human!Reader) by ShadowOfFandoms10
#5
Prisoner...? (Bad Sanses x Human!R...by ShadowOfFandoms
Y/N was a human from a brand new AU...which was practically nothing. They were eventually rescued by the Star Sanses...only to be taken prisoner by the Bad Sanses. What...
Blueberry Oneshots || Sanscest by Petulanced
#6
Blueberry Oneshots || Sanscestby amity eats children
Give me Berry ships and I will make a chapter or two for them! They don't have to be ships either, you can request friendship/angst stuff as well - also no lemons *sadly...
Ask and dare the multiverse by TheDragonOfBalance
#7
Ask and dare the multiverseby TheDragonOfBalance
Just as the title says. Ask and dare our kidnapped- I mean honored guests as they arrive in a white empty void. Each chapter will have someone new to join in the asks an...
Our Dear Wolfy (Sanses AU X Werewolf!Female!Reader) by AqilahDaWinterWolf
#8
Our Dear Wolfy (Sanses AU X Werewo...by Creator of Sans Creations
I'm sorry for boys who really want to read this... But hey! You can imagine yourself in this story as a boy. ༶•┈┈⛧┈♛✧༺♥༻✧♛┈⛧┈┈•༶ You are a werewolf and end up in a weird...
Becoming dream from dreamtale  by KarmaAkabane425
#9
Becoming dream from dreamtale by Karma Akabane
What if someone from our world became dream on the first day they were made and were determined to not lose their brother to corruption like the original dream did in th...
||No Longer The Guardian|| by LilyLunaetic
#10
||No Longer The Guardian||by Future novelist
Dream was replaced by a new young Guardian. Well that's his cue for his retirement but... Oh well, not everyone let him retire and do whatever he wanted to do. Even af...
A Burst of SuperNova by Nanachi8
#11
A Burst of SuperNovaby Nanachi
A change can lead to a new outcome, some worse than others or better than expected. When one's curiosity leads to a new life, do you accept the change or destroy it fro...
Sans AUs Oneshots & Short Stories (Discontinued) by Stargazer_Aldroth
#12
Sans AUs Oneshots & Short Stories...by Forever Stuck In UTMV Hell
Stop reading this it's so bad- Yeeeee. Sans AUs. This will feature some of my own AUs. For reference you can search around in my Undertale AUs Skits book. This will most...
Naturetale : reborn as lavender  by KarmaAkabane425
#13
Naturetale : reborn as lavender by Karma Akabane
(As far as I know, no one has made a story about naturetale like this so..and the only reason why I writing one like this is because of fatal error part 5? Or part 4, go...
(ՏᗩᑎՏ ᗩᑌ x READER x ᑭᗩᑭYᖇᑌՏ ᗩᑌ)  A Skele-ton Of Harem by YourdailyMOONBERRY
#14
(ՏᗩᑎՏ ᗩᑌ x READER x ᑭᗩᑭYᖇᑌՏ ᗩᑌ) A...by your daily MOON BERRY
You are a introvert who loves undertale and multiverse and loves to play video games and listin to music. What will happen if one day you meet the skele-bros of differ...
The Evolving Hero and the Ruler of the Abyss (Union Academy x Abyss Sans) by adamabyss12
#15
The Evolving Hero and the Ruler of...by adamabyss12
"I had thought...I had believed...I had hoped that...because you are heroes...you would care more about the lives of others, regardless of what and who they are, an...
Completed
Me and my brother become sans and papyrus from our own story!? by KarmaAkabane425
#16
Me and my brother become sans and...by Karma Akabane
What if two brothers somehow end up in their own story as the sans and papyrus that they made? They called the story starfell, mostly because everyone in the story is li...
My Two Masters (UF!Papyrus x Skeleton!Reader) by OreoDaSkeleton
#17
My Two Masters (UF!Papyrus x Skele...by ~Oreo~
Y/N's been traded and sold her entire life. She's learned firsthand that if you don't obey your master, you get hurt. If you force yourself to listen, you live another d...
A light in the darkness |Nightmare x reader| by NekkoetOnTheIntrnet
#18
A light in the darkness |Nightmare...by NekkoetOnTheIntrnet
Everyone craves the light. It's what keeps them going. people will do anything they can to keep their light shining, but what will they do if the light extinguish and wh...
Stuck in Fgod (Error404!sans) by GlowingEye4
#19
Stuck in Fgod (Error404!sans)by GlowingEye4
Error404 is having a wonderful day in his multiverse! Error is actually keeping his criteria, Alphatale is going along well, Bill!sans is nowhere to be seen, and that DA...
Reincarnated as a Voice by IHamTiredAndBored
#20
Reincarnated as a Voiceby TiredAndBored
TW: Swearing and slight gore Y/N reincarnates in the anti-void as a Voice... Will he befriend error or will they make them hate their guts? And will they meet other peop...