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Apocalypse Whenever
13766 members — last activity 5 minutes ago
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Space Opera Fans
5291 members — last activity 4 hours, 29 min ago
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Science Fiction & Philosophy
172 members — last activity Apr 26, 2023 01:59AM
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The Hacker Book Club
441 members — last activity Sep 26, 2022 05:37PM
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Scott Kimak's Dungeons, Dragons, Spaceships, and Anything Inbetween
504 members — last activity Nov 18, 2024 08:58AM
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Cyberpunk
1007 members — last activity Sep 09, 2025 03:53PM
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Hugo & Nebula Awards: Best Novels
2047 members — last activity 4 hours, 58 min ago
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Hard SF
1182 members — last activity Jul 01, 2025 02:53PM
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