r/KerbalSpaceProgram↗
Launching Space Frogs since 2011... for SCIENCE!
The Kerbal Space Program subreddit. For all your gaming related, space exploration needs. https://kerbalspaceprogram.com
1.5M subscribers1,217 posts / mo in Sep 2026 (incl. <1% by known bots)657 authors / mosince 2011
r/KerbalSpaceProgram has 1.5M members (+2.7% over the last 12 months). It gets about 1,217 posts a month from 657 people. Top topics: Mun Landings, Duna Landings and Kerbal Space Program.
When to post on r/KerbalSpaceProgram
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How r/KerbalSpaceProgram has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/KerbalSpaceProgram
Top topics
Share of the subreddit's posts
- Mun Landings2.6%
- Duna Landings2.5%
- Kerbal Space Program2.4%
- SSTOs and Spaceplanes2.2%
- Orbit and Transfer Mechanics2.0%
Brands people mention
Most-mentioned brands and sites, last 12 months
- SpaceDock
- Steamcommunity
- Kerbalx
- Substack
- Wolfram
Everything else about r/KerbalSpaceProgram
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