Underswapsans Stories

236 Stories

The Price of Power by Clichely
#1
The Price of Powerby Cliche
Nightmare had been so kind. He'd said all the right things and done everything perfectly to gain Dream's trust. When had the proposition turned from the possibility of...
A Miscalculation In Space by Readern111
#2
A Miscalculation In Spaceby Readern111
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...
Dreamtale Oneshots by TeardropBlue
#3
Dreamtale Oneshotsby Teardrop blue
A book of Dreamtale oneshots I started writing in 2017 that gradually turned into an actual story by 2020. The writing isn't great at first but I assure you as the onesh...
Children of Chaos by The-Punmaster
#4
Children of Chaosby The Punmaster
*Just a normal fgod fanfiction. *...or is it? Error gets cornered in Outertale by the Star Sanses. He missteps and falls into the VOID. Blue tries to catch him, but topp...
New Purpose (US!Papyrus x Female!Reader) by OreoDaSkeleton
#5
New Purpose (US!Papyrus x Female!R...by ~Oreo~
Y/N, meets a new coworker that changes her life forever. A monster, doing his best to make a living after moving out of the underground. Sans is this ecstatic, cheerful...
Six Skeletons, One Maid by RaccoonSinQueen
#6
Six Skeletons, One Maidby RaccoonSinQueen
Moved from AO3 because of reasons! "You are the only maid (or worker in general) that serves for the Skeletal Household. It's a skele-ton of work, but you manage by...
Can I Stay? (Underswap!Sans × Reader) by Fruityyloopz
#7
Can I Stay? (Underswap!Sans × Read...by Justmonika
[Prolong] My name is (Y/N). I have experienced many resets, so many I have lost count. The only people who remember are Sans, Flowey, and me. The monsters down here are...
𝙻𝚘𝚟𝚎 𝚊𝚛𝚘𝚞𝚗𝚍 𝚝𝚑𝚎 𝚌𝚘𝚛𝚗𝚎𝚛 𝚜𝚝𝚘𝚛𝚎 by MerryJane8
#8
𝙻𝚘𝚟𝚎 𝚊𝚛𝚘𝚞𝚗𝚍 𝚝𝚑𝚎 𝚌𝚘�...by Bitxhy
(ᴠᴀʀɪᴏᴜs sᴀɴs ᴀɴᴅ ᴘᴀᴘʏʀᴜs ᴀᴜs x ʀᴇᴀᴅᴇʀ) ||ᴀɴᴅ ᴛʜᴇɴ ɪ ɢᴏ ᴀɴᴅ sᴘᴏɪʟ ɪᴛ ᴀʟʟ ʙʏ sᴀʏɪɴɢ sᴏᴍᴇᴛʜɪɴɢ sᴛᴜᴘɪᴅ ʟɪᴋᴇ "ɪ ʟᴏᴠᴇ ʏᴏᴜ."|| Life was merciful enough to grace you...
CRIMINAL AMNESIAC by MissUnpopularOpinion
#9
CRIMINAL AMNESIACby You have been banned from the...
When Dream loses his memories after receiving severe head trauma in battle, Nightmare and his team choose to take advantage of the situation...
Completed
HIATUS | Found Family [Undertale / Nightmare Gang] by DeadEnDead
#10
HIATUS | Found Family [Undertale...by DeadEnDead
Cherry, an unusual swap-sans type, draws the attention of Dream and Nightmare when he is left the only survivor in his underground. With his Papy's gaster blasters follo...
《明日の星と月》|| [Bad/Star Sanses fan-story] || [Undertale AU] DISCONTINUED  by Nanaz_Nazmaki
#11
《明日の星と月》|| [Bad/Star Sanses fan-st...by Nazma Grace Lambert
Title Translation : 《Star And Moon of Tomorrow》[Bad/Star Sanses Fan-Story] ------------------------- "...since we are going to fight all the Pinnacle entities toget...
Underswap love [complete] by Author-Dayo
#12
Underswap love [complete]by Author-Dayo
this is a love story between swap sans and the reader, the reader falls runs threw MT.Ebott trying to escape her twisted guardians when she is shot into a massive hole...
Alphatale:Hollowprint by adamabyss12
#13
Alphatale:Hollowprintby adamabyss12
(This story is not a part of the Alphatale Story) Blueprint, the son of Ink and Underswap Sans, had been put into a situation that has came to beyond his control. One mo...
AU! Sanses x Reader Oneshots! (DISCONTINUED) by milkeco
#14
AU! Sanses x Reader Oneshots! (DIS...by Milk
Cover by @sergeantmisos on Twitter. Likely not to be updated for at least a few years. So sorry <3 undertale and its aus aren't really something I'm fixated on anymor...
My Love [Yanberry x Reader] by Fandomz_Fanboy
#15
My Love [Yanberry x Reader]by Remus Hisahoshi
You are locked below ground where nobody can find you. Chained to a wooden post in a dark, cold room. You are left with no memory and pain all over. You are left there f...
♡Insomnia♡ by trashy_name
#16
♡Insomnia♡by ganyu main
Picture not mine credit to artist! This story is about Dream who never knew anything about Error but when they spend time together and over come obstacles, maybe just ma...
Completed
AU Sans  X Reader Long OneShots by mylittlepinkamena222
#17
AU Sans X Reader Long OneShotsby 💜Simp Lord💜
Just Sans X Reader No Lemon Cover by my homeslice tkdgirl222 I don't own any of the characters in these story Don't kinkshame me I know your here for the same reason I w...
* our story, their world. by noxiia
#18
* our story, their world.by noxia ♡
He awakens in a place unfamiliar to him. Unlike the others, there's something about him that seems abnormal. Almost like he's.. aware.. ~~~~~~~ [ first fanfic :O this is...
Life in a forest ( Au sanses x reader x au papyruses ) by Tr33Hollows
#19
Life in a forest ( Au sanses x rea...by G-racie
An au sanses x MONSTER reader x au papyruses? Papyri? A fanfiction, it is not self-indulgent. So if your just lookin for some fanfiction to put yourself in, here it is...
A Brother's Bond by TwilightDragon5
#20
A Brother's Bondby TwilightDragon5
It's been a few years since the events of Dreamtale. Dream is forced to constantly protect everyone's happiness against his brother Nightmare, and it seems nothing can s...