AU,S

http://undertaleau.tumblr.com/bio

Welcome to the official Undertale Universes’ AU Masterlist!

*insert dramatic music*

I’m happy to say after feedback from a ton of people, I have divided the AUs into numerous suggested categories (they are listed alphabetically under each category). Each AU will have it’s own post which will be linked below to be clicked on for easy finding. As an AU is found, it will be listed in a “yet to be posted” category at the very bottom so everyone is able to see what will be worked on next since I get so many AU suggestions every day! I recognize some AUs could be multiple places so I put them in the category I feel they work best in. 

1. * = Denotes an AU with no artwork currently
2. + = Denotes an AU submitted to the blog directly (aka information present was posted as it was submitted)

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Character-centered AUs: Created to be centered around or specific to one character such as Sans or Papyrus.

• Baby Bird
• Blind Frisk
• Boss Chara
• Chara Mode +
• Desperatetale +
• Duotale +
• Flora Frisk +
• Inktale
• Multi-tale +
• Passive!Chara
• Psychotale +*
• Repenting Chara +*
• Royal Guard
• Skelefrisk
• Underpatch

Comedic/Parody AUs: Not meant to be serious, but instead are funny in nature.

• Calcium Man 
• Frisky Business
• Googlytale
• Hot Legs
• Smoltale
• Snaptale
• Underfresh
• Undernovela
• Undersass 
• Undertall
• Undynetale +

Community Generated AUs: An AU made by the community as a whole that wasn’t made by one singular person, i.e., a common idea multiple people have.

• Disbelief Papyrus
• Floweypot
• Possession!

Crossover AUs: Two unrelated universes/shows/etc combined into one AU.

• Abertale (Clarence x Undertale)
• Black★Rock + (Black★Rock Shooter x Undertale)
• Cantertale + (MLP x Undertale)
• Crystaltale + (Steven Universe x Undertale)
• Fandomtale + (Multiple Fandoms x Undertale)
• Flametale + ( KHR/Katekyo Hitman Reborn x Undertale)
• Gemtale + (Steven Universe x Undertale)
• Kettletale (Splatoon x Undertale)
• Masstale/Undereffect (Mass Effect x Undertale)
• Officetale + (The Office x Undertale)
• Poketale (Pokemon x Undertale ((Characters are Pokemon))
• Pockettale +* (Pokemon x Undertale) ((Characters are trainers))
• Poppintale (Mary Poppins x Undertale)
• Portale (Portal x Undertale)
• Snowed-in + (Frozen x Undertale)
• Star Wars +* (Star Wars x Undertale)
• Trainertale (Pokemon x Undertale ((Characters are Pokemon Trainers))
• UnderBound (Earthbound x Undertale)
• Undercall (Call of Duty x Undertale)
• Underfalls (Gravity Falls x Undertale)
• Underland + (Alice in Wonderland x Undertale)
• UnderRim + (Pacific Rim x Undertale)
• Understory + (Cave Story x Undertale)
• Undertale: RE (Tokyo Ghoul x Undertale)
• Undertime (Adventuretime x Undertale)
• Undertown + * (Ben 10 Universe x Undertale)
• Undervale *+ (Welcome to Nightvale x Undertale)

Design-Only AUs: Made solely for character design and not for a story. 

• Cattale
• Sugartale
• Underfell
• Undersail
• Vikingtale *+

Horror/Gore/Mature AUs: The designs, theme, or setting contains horror elements such as gore, creepy pasta, and frightening images, or contain high levels of violence and mature subject matter such as alcohol, sex, or drug use.

• Futuretale
• Horrortale
• NightmareTale +*
• Othertale +
• Predator
• Terrortale +
• UnderPrepared +
• Underworld
• Yanderetale

Human World AUs: All the characters are the same but live on the surface instead of the Underground, or some/all of the characters have been changed from monsters to humans/vise versa.

• Ask Frisk and Company +
• Circustale *
• Half-Hearted Dreemurs
• Human
• Idoltale
• Kindertale
• Overtale
• PTA!
• Switchtale +
• UnderSeige +
• Underslam
• UnSlavedTale

Music/Dance Related AUs: Based around either characters swapping places with a specific band or musician, or new designs built around a song.

• Bone Punk
• Dancetale
• Drop Pop Candy
• Hymmnetale/Hymmne oz Gatyulne +
• Lyrictale
• Undersong
• Undertone +

Timeline Jumping AUs: When a specific character or set of characters constantly go to other timelines that are not their own. 

• Christmas Party
• Core!Frisk
• Errortale/Error!Sans
• File -1 +
• God!Sans +
• Goopy Soul
• Traveltale +
• Twitchy Timeloop
• Undertime

Unique Universe AUs: The same in-game characters are present in an altered version of the actual game (entirely brand-new settings).

• Aftertale (Choose your own path comic)
• Angeltale
• Axiontale +
• Circustale
• Chesstale +
• Cybertale +
• Detectivetale *+
• Desolate World +*
• Dragontale +
• Edotale
• Fairytale
• Fantasytale
• Fusiontale 
• Heaventale +
• Hollowtale +
• Hope
• Hypertale +
• Joseontale
• Katanatale
• Lantern
• Mahoutale
• Outertale
• Piratetale
• Quarantale +
• Rainbowtale +
• Reapertale
• Scaletale +
• Shipworks +
• SpiritTale +
• Steamtale
• Technotale *
• Twintale
• Und_rT_le
• Underbed
• Und3r8org +
• Underboss
• UnderCatastrophe +*
• Undercover +
• Under Defect +
• UnderGold +
• Underhades
• Underhell
• UnderKingdom +
• Underlost +
• Undermafia
• Undertale Mob
• Undernuke +
• Underpain +
• Understeam
• Understuck +
• Under-Top +
• UnderThai +
• Warriortale
• Westerntale *
• YoukaiTale +*
• Zephyrtale

Universe Alterations: The in-game setting is the same, but one or more of the characters has been changed entirely.

• A New Tale +
• Age-Swap
• Aftertale (GenoSans attempts to save a new timeline from Chara)
• Alone Together
• And Nobody Came +
• Baby Bones
• Beastale +
• Bromalgamate
• Brothertale + (Papyrus becomes aware of timelines to save Sans)
• Brotherstale + (Frisk and Chara are brothers)
• Comic Papyrus
• Convergetale +
• Dreemur Heirs
• Dreemur Reborn
• Dusttale +
• Fallen Mage
• Finaltale +
• Gastertale
• Gaster Blaster!Sans
• Gaster-Stellar *
• Grouptale
• Guardiantale *+
• Guardtale +
• Handplates
• Hybrid +*
• Limbotale
• Littletale
• Manictale +
• Psycho-tale + (A disease starts to kill off the monsters of the underground)
• Psychotale *- (Sans starts killing humans to fix the timeline, losing his sanity)
• Oppositetale +
• Resurrection +
• Sirentale +*
• Sixbones
• Splittale *
• StoryShift
• Swaptale
• Theater Kids +
• UnderAgain +
• Underbreak +
• Underlies +
• Underpocalypse +
• Undernyan +
• Underswap
• Undertale: The Thought (Omega!Sans/Seraphim!Sans)
• UnderWarfare +*
• Underwolves +
• Virtualtale *+