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⋆˙⟡
: "Forever Weed Ink Vial (+ many other doodles)"
55 posts
#2
✧˖°.AU Discussion⋆˙⟡
: "Fuck it, what do you guys think of LoveManiac?"
31 posts
#3
✧˖°.My AU⋆˙⟡
: "[OC] CareDust; A Mother's Love // Quick Cape Animation for Progressed Toriel and more facesprites"
30 posts
#4
✧˖°.Memes⋆˙⟡
: "You found AU medias!"
11 posts
#5
✧˖°.AU Lore⋆˙⟡
: "Friendly reminder that 404 canonically likes Femboys btw"
10 posts
#6
✧˖°.AU Debate⋆˙⟡
: "Who do you think is the most Influencial person in the Undertale AU comunity"
5 posts
#7
✧˖°.AU Interactions⋆˙⟡
: "Lets larp (outer sans)"
4 posts
#8
✧˖°.AU Trio⋆˙⟡
: "bad time trio vs murder time trio was a set up. You put 2 classic sans level characters and a chara who's relative to them against: super sans who killed everyone for LV and have high stats. Sans who have chara's gimmick and also high stats and a sans who can't die. This match up is HORRENDOUS 🥀💔"
4 posts
#9
✧˖°.Music⋆˙⟡
: "It's Adventure Time!"
2 posts
#10
✧˖°.Merch⋆˙⟡
: "Cross plush arrived today"
1 post
Member Growth in r/UndertaleAU
Yearly
+5k members(65.0%)
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Last updated: August 15, 2026