r/UndertaleAU is a subreddit with 13k members. The community frequently discusses au, sans, undertale, art, and dusttale, and the most common flair used is ✧˖°.my au⋆˙⟡, ✧˖°.art⋆˙⟡, ✧˖°.music⋆˙⟡, ✧˖°.au lore⋆˙⟡, and ✧˖°.au discussion⋆˙⟡.
❤️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⋆˙⟡
: "Outfit might not stay"
28 posts
#2
✧˖°.Art⋆˙⟡
: "horrortale comic page redraw!"
16 posts
#3
✧˖°.Music⋆˙⟡
: "🔪 payback. Killer Sans ❤️"
5 posts
#4
✧˖°.AU Lore⋆˙⟡
: "I wonder.."
4 posts
#5
✧˖°.AU Discussion⋆˙⟡
: "I can't believe Sans is a racist😔"
3 posts
#6
✧˖°.Memes⋆˙⟡
: ""Why don't you like Alphatale?" Alphatale lore:"
3 posts
#7
✧˖°.AU Interactions⋆˙⟡
: "Axetale in Old VSS opening"
3 posts
#8
✧˖°.AU Debate⋆˙⟡
: "Who's winning this fight?"
2 posts
#9
✧˖°.AU Trio⋆˙⟡
: "Selfless acts trio,brand new trio in the undertale AUs,phase 1 and 1.5 animationsnout on youtube"
2 posts
Member Growth in r/UndertaleAU
Yearly
+5k members(60.6%)
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Last updated: October 1, 2026