Brave New World by Aldous Huxley1984 by George OrwellThe Handmaid’s Tale by Margaret AtwoodThe Road by Cormac McCarthyCloud Atlas by David  Mitchell
Mundane Science Fiction
48 books — 39 voters
1984 by George OrwellFahrenheit 451 by Ray BradburyDune by Frank HerbertThe Hitchhiker’s Guide to the Galaxy by Douglas AdamsThe Foundation Trilogy by Isaac Asimov
Best Science Fiction of the 20th Century
603 books — 488 voters

Ender’s Game by Orson Scott CardThe Hitchhiker’s Guide to the Galaxy by Douglas AdamsDune by Frank Herbert1984 by George OrwellFahrenheit 451 by Ray Bradbury
Best Science Fiction
3,831 books — 7,604 voters
Ready Player One by Ernest ClineThe Martian by Andy WeirOld Man's War by John ScalziThe Hunger Games by Suzanne CollinsLeviathan Wakes by James S.A. Corey
Best Science Fiction of the 21st Century
1,121 books — 9,064 voters

The Time Traveler's Wife by Audrey NiffeneggerOutlander by Diana GabaldonThe Time Machine by H.G. Wells11/22/63 by Stephen  KingA Wrinkle in Time by Madeleine L'Engle
Best Time Travel Fiction
2,156 books — 5,434 voters
Old Man's War by John ScalziOn Basilisk Station by David  WeberDauntless by Jack CampbellEnder’s Game by Orson Scott CardStarship Troopers by Robert A. Heinlein
Kick-Ass Military Science Fiction Books
392 books — 293 voters

The Martian by Andy WeirRendezvous with Rama by Arthur C. ClarkeThe Pythagorean by Alexander MorpheighLife After Life by Kate AtkinsonBefore the Coffee Gets Cold by Toshikazu Kawaguchi
Ultimate Hard Science Fiction
138 books — 213 voters

LOH by Rajeev NandaThe Three-Body Problem by Liu CixinDune by Frank Herbert1984 by George OrwellThe Martian by Andy Weir
Best Intelligent Sci-Fi
287 books — 302 voters