r/ProjectHailMary has 128k members (+289% over the last 12 months). It gets about 932 posts a month from 672 people. Top topics: Artemis Fowl Movie Adaptation Discussion, Sci-Fi & Space Adventures and Audiobooks.
When to post on r/ProjectHailMary
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How r/ProjectHailMary has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/ProjectHailMary
Top topics
Share of the subreddit's posts
- Artemis Fowl Movie Adaptation Discussion8.4%
- Sci-Fi & Space Adventures3.6%
- Audiobooks1.1%
- Ryan Gosling0.6%
- Books vs Movies0.4%
Brands people mention
Most-mentioned brands and sites, last 12 months
- etsy
- TikTok
- Spotify
- MakerWorld
- IMDb
Everything else about r/ProjectHailMary
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