r/sciencefiction is a subreddit with 320k members. The community frequently discusses fiction, science fiction, scifi, sci fi, and worst, and they frequently recommend/review sci-fi books, science fiction books, and science fiction.
This reddit is for fans and creators of Science Fiction and related media in any form. SF topics should involve plausible ideas reached through the rational application of science. General speculative fiction posts are fine as long as they primarily focus on Science Fiction.
Popular Topics in r/sciencefiction
#1
Fiction
33 posts
#2
Science Fiction
33 posts
#3
Scifi
23 posts
#4
Sci Fi
17 posts
#5
Worst
15 posts
#6
Books
13 posts
#7
Tired
9 posts
#8
Looking For A Short Story
9 posts
#9
Book
8 posts
#10
Annoying
7 posts
Products Discussed in r/sciencefiction
Sci-fi Books
150 reviews
#1
Robert A. Heinlein
4.6★ from 14 reviews
#2
Isaac Asimov
4.8★ from 9 reviews
#3
Orson Scott Card
5.0★ from 8 reviews
Science Fiction Books
102 reviews
#1
Arthur C. Clarke
5.0★ from 5 reviews
#2
Frank Herbert
5.0★ from 4 reviews
#3
Andy Weir
5.0★ from 4 reviews
Science Fiction
51 reviews
#1
Martha Wells
5.0★ from 4 reviews
#2
Andy Weir
4.7★ from 3 reviews
#3
Adrian Tchaikovsky
5.0★ from 3 reviews
Member Growth in r/sciencefiction
Yearly
+39k members(14.0%)
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About
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Last updated: October 15, 2026