Dune by Frank HerbertEnder’s Game by Orson Scott CardFahrenheit 451 by Ray BradburyFoundation by Isaac AsimovHyperion by Dan Simmons
Best Science Fiction
3,718 books — 7,094 voters
Fahrenheit 451 by Ray BradburyDune by Frank HerbertThe Foundation Trilogy by Isaac AsimovEnder’s Game by Orson Scott CardDo Androids Dream of Electric Sheep? by Philip K. Dick
Best Science Fiction of the 20th Century
554 books — 480 voters

The Martian by Andy WeirOld Man's War by John ScalziLeviathan Wakes by James S.A. CoreyWool Omnibus by Hugh HoweyThe Three-Body Problem by Liu Cixin
Best Science Fiction of the 21st Century
1,260 books — 9,051 voters
Foundation by Isaac Asimov
Science Fiction and Fantasy Must Reads
4,001 books — 5,151 voters

Old Man's War by John ScalziDune by Frank HerbertLeviathan Wakes by James S.A. CoreyA Fire Upon the Deep by Vernor VingeRendezvous with Rama by Arthur C. Clarke
Excellent Space Opera
1,059 books — 3,716 voters