r/scifi
ActiveScience Fiction, or Speculative Fiction if you prefer. Fantasy too. Asimov, Bradbury, Clarke, Dick, Heinlein and other SF books. SF movies and TV shows. Fantasy stuff like Tolkien and Game of Thrones. Laser guns, space ships, and time travel. etc. Star Trek, Battlestar, Star Wars, etc.
Members
4,356,708
as of February 2025
Last post
today
September 28, 2026
Posts (30 days)
100+
Created
2008
January 25, 2008
Total posts
185.2K
archived
Total comments
3.8M
archived
Is r/scifi dead? Active community.
r/scifi is posting regularly — the latest post was today. Active subreddits can't be requested through r/redditrequest.
Find abandoned subreddits in this niche you can claim →r/scifi activity over the last year
New posts per month.
Frequently asked questions about r/scifi
How many members does r/scifi have?
r/scifi had 4,356,708 members as of February 2025, the most recent archive crawl of its subscriber count.
Is r/scifi dead?
No. r/scifi is active — the most recent post was today, with 100+ posts in the last 30 days.
When was r/scifi created?
r/scifi was created on January 25, 2008.
Can I take over r/scifi?
Probably not. r/scifi is still in active use, and Reddit only hands over communities whose human moderators have all gone inactive on Reddit for 60+ days. If you want a community in this niche, look for abandoned subreddits on the same topic instead — DeadSubs finds them automatically.
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Activity checked September 28, 2026from the Arctic Shift Reddit archive. Member counts come from the archive's most recent crawl and may lag Reddit. DeadSubs is not affiliated with Reddit Inc.