#Undertale

#Undertale

Reads 112
Votes 3
Parts 1

Ongoing28m

Last published Sat, Jan 30, 2016

alphys asgoredreemurr asrieldreemurr flowey floweytheflower

Short stories featuring your favourite Undertale characters. Alternate Universes included.

All Rights Reserved

Join the largest storytelling communityGet personalized story recommendations, save your favourites to your library, and comment and vote to grow your community.

You may also like

Experimentation: An Underswap Fanfiction
Temmie gets bored of the same dialogue from the same people from the same situations every reset. But one day, she manages to create a timeline that is very different than the usual lame conflicts in the other timelines. She decides to experiment with it as she uses her favorite subject.
Complete
[DISCONTINUED] Undertale AUs x reader
Just some Undertale and AUs x reader for funsies <3 Happy 2025!!
Complete
Undertale in Among Us
What if our favorite Undertale characters were in the world of Among Us? Read along as the imposter, Frisk, tries to sabotage and kill everyone. Each area of the ship represents an area in the underground and nine of our favorite characters (plus added ghosts) will have to finish their tasks and root out any imposters in their midst. Will sans finally stop being a lazybones and finish his tasks? Will Undyne stop the imposter in their tracks? Will Mettaton ever stop accusing monsters that he knows are innocent? Read along to find out!
Complete
AU! Sanses x Reader Oneshots! (DISCONTINUED)
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 anymore!
Complete
liaison 🩹
𝐍𝐢𝐠𝐡𝐭𝐦𝐚𝐫𝐞 𝐡𝐚𝐬 𝐠𝐫𝐨𝐰𝐧 𝐢𝐧𝐬𝐚𝐧𝐞. 𝐇𝐞 𝐧𝐨 𝐥𝐨𝐧𝐠𝐞𝐫 𝐞𝐱𝐢𝐬𝐭𝐬. 𝐈𝐭 𝐜𝐚𝐮𝐬𝐞𝐬 𝐦𝐚𝐧𝐲 𝐭𝐨 𝐟𝐞𝐞𝐥 𝐞𝐦𝐩𝐭𝐲 𝐚𝐧𝐝 𝐥𝐢𝐭𝐭𝐥𝐞 𝐦𝐨𝐧𝐬𝐭𝐞𝐫𝐬 𝐚𝐫𝐨𝐮𝐧𝐝 𝐭𝐡𝐞 𝐦𝐮𝐥𝐭𝐢𝐯𝐞𝐫𝐬𝐞. 𝐈𝐭 𝐢𝐬 𝐝𝐫𝐞𝐚𝐦𝐬 𝐫𝐞𝐬𝐩𝐨𝐧𝐬𝐢𝐛𝐢𝐥𝐢𝐭𝐲 𝐭𝐨 𝐭𝐚𝐤𝐞 𝐜𝐚𝐫𝐞 𝐨𝐟 𝐭𝐡𝐞𝐦. 𝐈𝐧 𝐭𝐡𝐞 𝐩𝐫𝐨𝐜𝐞𝐬𝐬 𝐭𝐡𝐨𝐮𝐠𝐡, 𝐂𝐫𝐨𝐬𝐬 𝐛𝐞𝐜𝐨𝐦𝐞𝐬 𝐜𝐨𝐧𝐜𝐞𝐫𝐧𝐞𝐝 𝐚𝐧𝐝 𝐰𝐨𝐫𝐤𝐬 𝐚𝐥𝐨𝐧𝐠 𝐬𝐢𝐝𝐞 𝐝𝐫𝐞𝐚𝐦. 𝐇𝐞 𝐬𝐭𝐚𝐫𝐭𝐬 𝐭𝐨 𝐠𝐫𝐨𝐰 𝐟𝐞𝐞𝐥𝐢𝐧𝐠𝐬 𝐟𝐨𝐫 𝐝𝐫𝐞𝐚𝐦 𝐭𝐚𝐤𝐢𝐧𝐠 𝐡𝐢𝐦 𝐚 𝐰𝐡𝐢𝐥𝐞 𝐭𝐨 𝐜𝐨𝐧𝐟𝐞𝐬𝐬.. 𝐀𝐥𝐨𝐧𝐠 𝐬𝐢𝐝𝐞 𝐨𝐭𝐡𝐞𝐫 𝐜𝐨𝐮𝐧𝐭𝐞𝐫𝐩𝐚𝐫𝐭𝐬 𝐭𝐡𝐞 𝐬𝐭𝐨𝐫𝐲 𝐛𝐞𝐠𝐢𝐧𝐬 𝐭𝐨 𝐠𝐞𝐭 𝐛𝐞𝐭𝐭𝐞𝐫, 𝐛𝐮𝐭 𝐚𝐥𝐬𝐨 𝐚 𝐥𝐨𝐭 𝐰𝐨𝐫𝐬𝐞. ✦ THIS STORY HAS TRIGGERING TOPICS SUCH AS DEPRESSION AND SUICIDAL THOUGHTS !! IF YOUR SENSITIVE TO THOSE TOPICS I SUGGEST NOT READING !! ✦ART IS MINE
Complete
VOXISTALE Shorts
Shorts stories set in the VOXISTALE universe.
AU Sans X Reader Long OneShots
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 wrote these >:) Also these are for girls but you can change the pronouns and the girly stuff to guy stuff I don't care. @tkdgirl222 edits and helps write all of the stories.
Complete
Undertale Truth or Dare
Truth or dare with Toriel, Sans, Papyrus, Undyne, Alphys, Asgore, Flowey, Napstablook, Mettaton EX/NEO, Asriel, Frisk, Chara and TeMmIe!!!
Complete
Ink relocates error (kidnapped)
Yeah I gained an idea and stuff so things will be different even personalities and everything you can think of :)
TM-S: 4 Stages Of Pain (AU Sans' X Reader)#Wattys2016
Sadness.... Confusion... Grief..... Betrayal.....
Complete

Experimentation: An Underswap Fanfiction

Temmie gets bored of the same dialogue from the same people from the same situations every reset. But one day, she manages to create a timeline that is very different than the usual lame conflicts in the other timelines. She decides to experiment with it as she uses her favorite subject.

Content Guidelines