r/ScienceFictionBooks↗
Science Fiction Book Club
Welcome to a Science Fiction book club! We read Science fiction books from the old masters to new authors and everything in between!
33k subscribers89 posts / mo in Sep 2026 (incl. ~2% by known bots)68 authors / mosince 2016
r/ScienceFictionBooks has 33k members (+74% over the last 12 months). It gets about 89 posts a month from 68 people. Top topics: Sci-Fi Books, Space Sci-Fi Books and Sci-Fi Horror Aliens.
When to post on r/ScienceFictionBooks
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How r/ScienceFictionBooks has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/ScienceFictionBooks
Top topics
Share of the subreddit's posts
- Sci-Fi Books11%
- Space Sci-Fi Books4.2%
- Sci-Fi Horror Aliens3.1%
- Free Sci-Fi Novels3.1%
- Space Opera Novels3.0%
Brands people mention
Most-mentioned brands and sites, last 12 months
- Goodreads
- Royal Road
- Fanfiction
- Substack
- Amazon
Everything else about r/ScienceFictionBooks
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