Science fiction readers: communities and participation rules
They read science fiction and enjoy discussing imagined technologies, future societies, and alien civilizations.
Related communities · 156
Places with a sampled week come first, followed by recorded membership. Membership is neither activity nor a recommendation score.
- r/scifi4.36M members · 2025-01
- Language
- English
- Introducing a product
- Not established
No original wording is recorded for this action, so permission cannot be established here.
Rules and sources →Discussion sample availableWhy this appears
Listed through a recorded audience relationship. Demand for your product has not been verified here.
Every post of 2026-09 in Reddit's public archive (Arctic Shift's monthly file); up to 60 posts a place, fixed by the hash of the post's id, judged one by one by Jev: written by one of these people, and showing one's own work; still up as the archive's second look a day and a half later found it.
View source · record organized October 15, 2026 - r/Fantasy3.76M members · 2025-01
- Language
- English
- Introducing a product
- Not established
Recorded rule excerptHomework and academia related help are not permitted.
Rules and sources →Discussion sample availableWhy this appears
Listed through a recorded audience relationship. Demand for your product has not been verified here.
Every post of 2026-09 in Reddit's public archive (Arctic Shift's monthly file); up to 60 posts a place, fixed by the hash of the post's id, judged one by one by Jev: written by one of these people, and showing one's own work; still up as the archive's second look a day and a half later found it.
View source · record organized October 15, 2026Recorded rule excerpt · View source · record organized October 14, 2026
- r/Cyberpunk888k members · 2025-01
- Language
- English
- Introducing a product
- Not established
No original wording is recorded for this action, so permission cannot be established here.
Rules and sources →Discussion sample availableWhy this appears
Listed through a recorded audience relationship. Demand for your product has not been verified here.
Every post of 2026-09 in Reddit's public archive (Arctic Shift's monthly file); up to 60 posts a place, fixed by the hash of the post's id, judged one by one by Jev: written by one of these people, and showing one's own work; still up as the archive's second look a day and a half later found it.
View source · record organized October 15, 2026 - r/AskScienceFiction866k members · 2025-01
- Language
- English
- Introducing a product
- Not established
Recorded rule excerptAll discussion should be based on the lore and internal logic of the fictional story being discussed (aka a Watsonian perspective), not a real-world, out-of-universe perspective (a
…Rules and sources →Discussion sample availableWhy this appears
Listed through a recorded audience relationship. Demand for your product has not been verified here.
Every post of 2026-09 in Reddit's public archive (Arctic Shift's monthly file); up to 60 posts a place, fixed by the hash of the post's id, judged one by one by Jev: written by one of these people, and showing one's own work; still up as the archive's second look a day and a half later found it.
View source · record organized October 15, 2026Recorded rule excerpt · View source · record organized October 14, 2026
- r/dune607k members · 2025-01
- Language
- English
- Introducing a product
- Excerpt recorded; check its scope
Recorded rule excerptPosting links to your own content or commercial posts for your own merch is fine as long as: a) it doesn’t violate copyright, b) you don’t spam, and c) you also engage with the sub
…Rules and sources →Discussion sample availableWhy this appears
Listed through a recorded audience relationship. Demand for your product has not been verified here.
Which groups each place is for, judged by a model on the place's own description in the list; no posts read.
View source · record organized October 14, 2026Recorded rule excerpt · View source · record organized October 14, 2026
- r/HFY352k members · 2025-01
- Language
- English
- Introducing a product
- Not established
No original wording is recorded for this action, so permission cannot be established here.
Rules and sources →Discussion sample availableWhy this appears
Listed through a recorded audience relationship. Demand for your product has not been verified here.
Every post of 2026-09 in Reddit's public archive (Arctic Shift's monthly file); up to 60 posts a place, fixed by the hash of the post's id, judged one by one by Jev: written by one of these people, and showing one's own work; still up as the archive's second look a day and a half later found it.
View source · record organized October 15, 2026 - r/40kLore335k members · 2025-01
- Language
- English
- Introducing a product
- Not established
Recorded rule excerptPosts featuring self-promotion will be removed.
Rules and sources →Discussion sample availableWhy this appears
Listed through a recorded audience relationship. Demand for your product has not been verified here.
Every post of 2026-09 in Reddit's public archive (Arctic Shift's monthly file); up to 60 posts a place, fixed by the hash of the post's id, judged one by one by Jev: written by one of these people, and showing one's own work; still up as the archive's second look a day and a half later found it.
View source · record organized October 15, 2026Recorded rule excerpt · View source · record organized October 14, 2026
- r/printSF331k members · 2025-01
- Language
- English
- Introducing a product
- Not established
Recorded rule excerptno posting, linking, or recommending your own content
Rules and sources →Discussion sample availableWhy this appears
Listed through a recorded audience relationship. Demand for your product has not been verified here.
Every post of 2026-09 in Reddit's public archive (Arctic Shift's monthly file); up to 60 posts a place, fixed by the hash of the post's id, judged one by one by Jev: written by one of these people, and showing one's own work; still up as the archive's second look a day and a half later found it.
View source · record organized October 15, 2026Recorded rule excerpt · View source · record organized October 14, 2026
- r/StarWarsEU315k members · 2025-01
- Language
- English
- Introducing a product
- Not established
No original wording is recorded for this action, so permission cannot be established here.
Rules and sources →Discussion sample availableWhy this appears
Listed through a recorded audience relationship. Demand for your product has not been verified here.
Every post of 2026-09 in Reddit's public archive (Arctic Shift's monthly file); up to 60 posts a place, fixed by the hash of the post's id, judged one by one by Jev: written by one of these people, and showing one's own work; still up as the archive's second look a day and a half later found it.
View source · record organized October 15, 2026 - r/sciencefiction261k members · 2025-01
- Language
- English
- Introducing a product
- Not established
Recorded rule excerptActive real users of Reddit are allowed to post occasional topics and comments related to their personal content.
Rules and sources →Discussion sample availableWhy this appears
Listed through a recorded audience relationship. Demand for your product has not been verified here.
Every post of 2026-09 in Reddit's public archive (Arctic Shift's monthly file); up to 60 posts a place, fixed by the hash of the post's id, judged one by one by Jev: written by one of these people, and showing one's own work; still up as the archive's second look a day and a half later found it.
View source · record organized October 15, 2026Recorded rule excerpt · View source · record organized October 14, 2026
- r/TheExpanse229k members · 2025-01
- Language
- English
- Introducing a product
- Not established
Recorded rule excerptEnthusiastic and passionate discussion and debate are good things
Rules and sources →Discussion sample availableWhy this appears
Listed through a recorded audience relationship. Demand for your product has not been verified here.
Every post of 2026-09 in Reddit's public archive (Arctic Shift's monthly file); up to 60 posts a place, fixed by the hash of the post's id, judged one by one by Jev: written by one of these people, and showing one's own work; still up as the archive's second look a day and a half later found it.
View source · record organized October 15, 2026Recorded rule excerpt · View source · record organized October 14, 2026
- r/MawInstallation203k members · 2025-01
- Language
- English
- Introducing a product
- Not established
Recorded rule excerptWe expect in-depth contributions here, not simple assertions without context.
Rules and sources →Discussion sample availableWhy this appears
Listed through a recorded audience relationship. Demand for your product has not been verified here.
Every post of 2026-09 in Reddit's public archive (Arctic Shift's monthly file); up to 60 posts a place, fixed by the hash of the post's id, judged one by one by Jev: written by one of these people, and showing one's own work; still up as the archive's second look a day and a half later found it.
View source · record organized October 15, 2026Recorded rule excerpt · View source · record organized October 14, 2026
After finding a community, find the conversations worth joining.
Hmm uses your product’s context to find relevant discussions, prepare replies and follow responses after you send. ahahmm has not launched yet; Mac comes first, with Windows in development.