r/UndertaleAU is a subreddit with 12k members. The community frequently discusses au, sans, undertale, art, and dusttale, and the most common flair used is ✧˖°.art⋆˙⟡, ✧˖°.au discussion⋆˙⟡, ✧˖°.my au⋆˙⟡, ✧˖°.memes⋆˙⟡, and ✧˖°.au lore⋆˙⟡.
❤️A place for Undertale and its various AUs. Separate from Deltarune.❤️
Popular Topics in r/UndertaleAU
#1
Au
119 posts
#2
Sans
88 posts
#3
Undertale
64 posts
#4
Art
29 posts
#5
Dusttale
14 posts
#6
Oc
13 posts
#7
Echotale
13 posts
#8
Core Frisk
13 posts
#9
Mafiatale
12 posts
#10
Character
11 posts
Flair Used in r/UndertaleAU
#1
✧˖°.Art⋆˙⟡
: "A Betty Noir, Artist: R4XLM"
56 posts
#2
✧˖°.AU Discussion⋆˙⟡
: "Have y'all heard of Tory Fox UNDERSWAP? What are y'alls thoughts on it?"
30 posts
#3
✧˖°.My AU⋆˙⟡
: "[OC] One of the weirdest Dust variant; Dust!Toriel"
26 posts
#4
✧˖°.Memes⋆˙⟡
: "I think that's the wrong Undertale..."
14 posts
#5
✧˖°.AU Lore⋆˙⟡
: "He cant keep getting away with this peak Electric Boogaloo 2"
5 posts
#6
✧˖°.AU Debate⋆˙⟡
: "Which Version Of Cross Is Stronger?"
5 posts
#7
✧˖°.AU Interactions⋆˙⟡
: "How would an interaction between all of them go?"
4 posts
#8
✧˖°.AU Trio⋆˙⟡
: "Show me your favorite trio and why you like them."
2 posts
#9
✧˖°.AU Summary⋆˙⟡
: "Information About ' Ending Time Octet '"
1 post
Member Growth in r/UndertaleAU
Yearly
+4k members(60.3%)
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Last updated: July 4, 2026