r/UndertaleAU is a subreddit with 14k members. The community frequently discusses au, sans, undertale, art, and dusttale, and the most common flair used is ✧˖°.my au⋆˙⟡, ✧˖°.art⋆˙⟡, ✧˖°.au lore⋆˙⟡, ✧˖°.au discussion⋆˙⟡, and ✧˖°.au trio⋆˙⟡.
❤️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
✧˖°.My AU⋆˙⟡
: "Undertale x Cyberpunk AU concept"
23 posts
#2
✧˖°.Art⋆˙⟡
: "Female Killer!Sans"
18 posts
#3
✧˖°.AU Lore⋆˙⟡
: "New Info About Revolver's Take on Sp Dust"
11 posts
#4
✧˖°.AU Discussion⋆˙⟡
: "Question for ALİVE AU readers/fans"
8 posts
#5
✧˖°.AU Trio⋆˙⟡
: "Swap Triple!Bad Murder Time Trio (TT!BTMTT:TC Part 2)"
4 posts
#6
✧˖°.AU Interactions⋆˙⟡
: "Halloween party part 1"
3 posts
#7
✧˖°.Memes⋆˙⟡
: "Live footage of Bum (Killer Sans) HUSSING his ass away from a competent opponent (Evans Dusttale Sans) after he realized he can't neg diff them using bullshit hacks"
2 posts
#8
✧˖°.AU Summary⋆˙⟡
: "OFFICIAL DESIGN FOR KNULLIFECTED H.E.N.R.Y. (and Nullities in soul form)"
2 posts
#9
✧˖°.Music⋆˙⟡
: "i made a virus404 theme"
1 post
Member Growth in r/UndertaleAU
Yearly
+5k members(59.6%)
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Last updated: October 26, 2026