Dune by Frank HerbertDo Androids Dream of Electric Sheep? by Philip K. DickThe Moon Is a Harsh Mistress by Robert A. HeinleinCat’s Cradle by Kurt Vonnegut Jr.This Immortal by Roger Zelazny
Classic Science Fiction - 1960-1969
293 books — 246 voters
Ringworld by Larry Niven
Classic Science Fiction - 1970-1979
274 books — 248 voters

Dune by Frank HerbertFoundation by Isaac AsimovI, Robot by Isaac AsimovNeuromancer by William GibsonSnow Crash by Neal Stephenson
Best Science Fiction
3,690 books — 7,048 voters
1984 by George OrwellDune by Frank HerbertThe Moon Is a Harsh Mistress by Robert A. HeinleinThe End of Eternity by Isaac AsimovCat’s Cradle by Kurt Vonnegut Jr.
Best Science Fiction of the 20th Century
554 books — 480 voters

1984 by George OrwellBrave New World by Aldous HuxleyMemoirs of a Geisha by Arthur GoldenDune by Frank Herbert
Best Books of the 20th Century
7,899 books — 49,789 voters
Dune by Frank HerbertThe Moon Is a Harsh Mistress by Robert A. Heinlein
Excellent Space Opera
1,032 books — 3,707 voters

The Martian by Andy WeirLittle Brother by Cory Doctorow
Best Science Fiction of the 21st Century
1,251 books — 9,014 voters
The Odyssey by HomerDune by Frank Herbert1984 by George OrwellThe Chosen by Chaim PotokThe Moon Is a Harsh Mistress by Robert A. Heinlein
Best Books Ever
76,753 books — 285,554 voters