• The best military science fiction & fantasy books by veterans
• The best science fiction books that will take you on a journey
• The best sci-fi books for visiting alien worlds
• The best first-contact novels for science fiction fans and the uninitiated
• The best alternate/secret histories that completely blew my mind
• The best sci-fi romance and fantasy books with unearthly beings
• The best hard science fiction books published this century
• The best sci-fi and speculative stories depicting queer lives
• The best books of Jewish science fiction and fantasy
• The best books for space lesbians
• The best green science fiction books
• The best space opera books written by women
• The best humorous sci-fi books with female protagonists
• The best books about underdogs overcoming great odds
• The most prescient science fiction books about artificial intelligence
• The best books featuring real-world cities in SF and fantasy
• The best recent science fiction detective books
• The best sci-fi books about war and weapons
• The best SFF books with emotionally scarred characters