AU:
Underfell by Vic the Underfella
Underswap by Community
Outertale by 2mi27 (Design by Darksin31)
Horrortale by Sour Apple Studios
Undertale Last Breath by ZerJox
Fellswap 2020 by Spudward
Dusttale by OSTEOPHILE
ANY SWAP AU by RIAEA
Wiki!Sans by Paintedhen
Fresh!Sans by Tratser
Storyshift by Voltra
Underpants by Sr Pelo
Fem!Sans by 1gontH
Undertale Minus by Me
Convertedtale by Me
Russiantale by Community
Spoliedtale by Me/Fandom
Next up
Reworked sprites of Sans and Papyrus in honor of Undertale's 10th anniversary!!!
Sprites for the canceled Undertale TBOS
[Overfell] Full Cast
This week's Fan Art Friday celebrates Undertale! Accept the quest in your quest log to get started.
My take on Underfell
Happy Joltidays! A new quest has entered your quest log. Accept the quest and follow @souptaels 
to open today's slot on the calendar.
Minecrap
[NO!Sansverse] Error and his friends
Roaring Knight: Crossover (Tentative Title)
[WIP 01]
[Underfell take] Monsters from the Ruins
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