r/Undertale↗
/r/Undertale: Happy Anniversasy!
UNDERTALE is an indie RPG created by Toby Fox where nobody has to die! Take control of human, who fell into an underground world filled with monsters - make strange friends or stranger enemies as you FIGHT or ACT through unique RPG/bullet-hell battle system and try to find your way out. Will you show monsters standing in your way MERCY, or slaughter them all?
667k subscribers4,123 posts / mo in Sep 2026 (incl. <1% by known bots)2,444 authors / mosince 2013
r/Undertale has 667k members (+12% over the last 12 months). It gets about 4,123 posts a month from 2,444 people. Top topics: Undertale Discussions, Undertale Routes and Sans and Undertale Discussion.
When to post on r/Undertale
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How r/Undertale has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/Undertale
Top topics
Share of the subreddit's posts
- Undertale Discussions4.2%
- Undertale Routes4.0%
- Sans and Undertale Discussion3.8%
- Chara Characters & Concepts2.4%
- Undyne Memes1.9%
Brands people mention
Most-mentioned brands and sites, last 12 months
- Ko-fi
- Game Jolt
- Wolfram
- xcancel
- Fangamer
Everything else about r/Undertale
Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.
Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research