Hyperion by Dan SimmonsEnchantment by Orson Scott CardThe Anubis Gates by Tim PowersSlaughterhouse-Five by Kurt Vonnegut Jr.A Connecticut Yankee in King Arthur's Court by Mark Twain
Best Time Travel Fiction
2,156 books — 5,437 voters
The Book of the New Sun by Gene WolfeThe Shadow of the Torturer by Gene WolfeThe Sword of the Lictor by Gene WolfeThe Citadel of the Autarch by Gene WolfeHyperion by Dan Simmons
Best Science Fiction
3,841 books — 7,749 voters

The Book of the New Sun by Gene WolfeThe Hyperion Omnibus by Dan SimmonsThe Great Dune Trilogy by Frank Patrick Herbert
Best Science Fiction Series
446 books — 1,141 voters

The Once and Future King by T.H. WhiteMary Stewart's Merlin Trilogy by Mary  StewartA Connecticut Yankee in King Arthur's Court by Mark TwainThe Story of King Arthur and His Knights by Howard PyleArthur Rex by Thomas Berger
The Arthurian Legend Retold
457 books — 762 voters
Dune by Frank Patrick HerbertEnder’s Game by Orson Scott CardThe Martian Chronicles by Ray Bradbury1984 by George OrwellDune Messiah by Frank Patrick Herbert
The Best Classical Science Fiction Works
112 books — 153 voters

1984 by George OrwellBrave New World by Aldous HuxleyFahrenheit 451 by Ray BradburyWe by Yevgeny Zamyatin
Best Dystopian and Post-Apocalyptic Fiction
3,991 books — 26,649 voters
The Once and Future King by T.H. WhiteA Connecticut Yankee in King Arthur's Court by Mark TwainArthur Rex by Thomas Berger
Best Arthurian Fiction
483 books — 1,450 voters

Slaughterhouse-Five by Kurt Vonnegut Jr.Brave New World by Aldous Huxley1984 by George OrwellCat’s Cradle by Kurt Vonnegut Jr.Dune by Frank Patrick Herbert
Adult Science Fiction
189 books — 50 voters
Ender’s Game by Orson Scott CardDune by Frank Patrick HerbertBrave New World by Aldous HuxleySlaughterhouse-Five by Kurt Vonnegut Jr.Cat’s Cradle by Kurt Vonnegut Jr.
Best Science Fiction & Fantasy Books
8,729 books — 25,784 voters