An Undertale AU rec. If anyone knows of one, please jump and wave your arms for me, and then also @ me OR leave an ask.
UNDERSWAP by @popcornpr1nce
Undertale characters are swapped with their counterparts in the game. Ex.: Sans now plays Papyrus’ role and carries some of Papyrus’ characteristics while still being a smol cinnamon roll.
blog: http://popcornpr1nce.tumblr.com/underswap
AFTERTALE by @readaftertale
An Undertale side-story that’s a choose-your-own adventure. Still updating!
Blog: http://readaftertale.tumblr.com/
FANTASYTALE by @theatomicpumpkin
Undertale characters in a hella fantasy world.
Blog: http://theatomicpumpkin.tumblr.com/tagged/fantasytale
UNDERFELL by multiple peeps
A design based AU where the characters are ~evil~
Blog: http://underfell.tumblr.com/
OUTERTALE by @2mi127
Everything Undertale, but in SPACE!!
Blog: http://outertale.tumblr.com/
UNDERWORLD by @coulsart
You reset too many times, and now Undertale is your own personal hell…you messed up.
Blog: http://coulsart.tumblr.com/post/132758874635/heres-my-new-monstrosity-of-an-au-probably-gonna
ROCKABILLY (GASTER!) by @borurou
Sans and Papyrus are Gaster fusions set in a greaser universe.
Blog: http://gaster-skelebros.tumblr.com/
BROMALGAMATE by @moofrog and @sushinfood
After a chain of events, Sans and Papyrus fuse together into a messy slop of brotherhood.
Blog: http://bromalgamate-au.tumblr.com/
SWAPTALE by @scotchtapeofficial
Pacifist!Frisk and Genocide!Chara swap bodies and insanity ensues.
Blog: http://scotchtapeofficial.tumblr.com/post/131874162832/i-have-a-bad-idea-for-a-comic-next
ALONE TOGETHER by @upperstories from the theory by @zarla-s
Papyrus and Sans are pieces of Gaster, from when Gaster fell into the core and split into two.
AU Blog: http://upperstories.tumblr.com/post/133572700093/poor-old-mr-gaster-fell-into-the-core-his-soul
Theory blog: http://zarla-s.tumblr.com/post/131523130670/im-100-on-board-the-gaster-skeledad-train-but
GASTER!SANS by ??? ((I had believed to be cliffarts, but they denied it and said the idea started as multiple text posts throwing the ‘What if?’ around))
Sans loses control and becomes a terrifying gaster blaster beast.
There is no main blog, but here is an example: http://cliffearts.tumblr.com/post/132588755771/sans-i-is-that-you-i-really-like-the-concept
POSSESSION by ??? ((People speculate sushinfood because of an audio post they did, but they deny the creation. I can’t find an original maker.))
Undertale characters become possessed by Flowey.
There is no main blog, but here is an example: http://gravityfallspterosaur.tumblr.com/post/133973284076/flowey-im-just-giving-the-human-a-helping-hand
OVERTALE by @chassdraws
A swap type AU in which Frisk is the monster that accidentally gets to where the humans hang out.
Blog: http://chassdraws.tumblr.com/post/129673569358/try-n-stop-me-fuckers
KINDERTALE by @me-myself-and-the-paradox
The monsters are all kids who got lost on the surface. Frisk takes them in and becomes kind of like a kindergarten teacher to them all. Super cute.
Blog: http://kindertale.tumblr.com/
BONEPUNK by @groscar
Sans & Papyrus/Daft Punk.
Blog: http://groscar.tumblr.com/post/134085787897/bone-punk-dafttale
AGE-SWAP by @yodeki
If they were older, now they’re younger, and vice-versa~
Blog: http://yodeki.tumblr.com/post/133024623828/the-age-swap-au-is-so-cute-w
SKELE-FRISK by @creativegreenbeans
Frisk is also a skeleton! Skelebro shenanigans ensues.
Blog: http://creativegreenbeans.tumblr.com/post/133911296141/the-cutest-of-the-cuties-i-also-have-a-desktop
GENOCIDE!GRILLBY/NOMERCY!GRILLBY by @zoruui
In the genocide run, anytime after Mettaton, Grillby becomes a Boss to protect his customers from you.
Blog: http://ask-grillby.tumblr.com/post/131591355760/i-think-it-would-be-kinda-cool-if-grillby-was-a
UNDERMAFIAZ by @kiatokid
The characters are mafia members!
Blog: http://kiatokid.tumblr.com/
BLIND!FRISK by @ennji-undertale
Frisk is blind, and the adventure continues…
Blog: http://ennji-undertale.tumblr.com/UTBFAU
LIMBOTALE by @sovogirldrawstuff
Chara and Gaster are stuck in limbo together.
Blog: http://sovogirldrawstuff.tumblr.com/post/132875958764/silly-accent-welcome-to-my-au-what-have-we
CALCIUM MAN by @exekyl-art and @kry-r-havoc
A play on Iron Man - Sans is Calcium Man. (possible War Mandible coming for Papyrus)
Blog: http://exekyl-art.tumblr.com/search/calcium+man
DREEMURR REBORN by @dreemurr-reborn
Frisk and Asriel are fused together when Frisk tries to save Asriel by giving them their soul.
Blog: http://dreemurr-reborn.tumblr.com/
CORE!FRISK by @dokudoki
Frisk is thrown into the core, and after a turn of events, they gain the ability to be in any Undertale timeline in existence.
Blog: http://dokudoki.tumblr.com/core!frisk
UT MOB by @in-sideunder
The Undertale characters, mobster versions.
Blog: http://in-sideunder.tumblr.com/search/ut-mob
UNDERSTEAM by @ms1sharklee
Steampunk Undertale!
Blog: http://ms1sharklee.tumblr.com/post/133178038710/undertale%EC%96%B8%EB%8D%94%ED%85%8C%EC%9D%BC-understeam-i-really-love
RESURRECTION by @sans-oh-my-god
Gaster creates Sans and Papyrus from the bones of fallen humans. Then things get even crazier…
Blog: http://sans-oh-my-god.tumblr.com/post/133806609668/resurrection-au
PTA!SANS by @bedsafely
Parent Teacher Association ! Sans. He WILL get a say in Frisks’ education, one delicious lemon square at a time. Eff your cookies, Linda.
Blog: http://bedsafely.tumblr.com/post/134358263727/parent-teacher-association-sans-is-important-and
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