Dune by Frank HerbertDo Androids Dream of Electric Sheep? by Philip K. DickThe Forever War by Joe HaldemanHyperion by Dan SimmonsFlowers for Algernon by Daniel Keyes
SF Masterworks
203 books — 724 voters

The Hobbit, or There and Back Again by J.R.R. TolkienThe Fellowship of the Ring by J.R.R. TolkienThe Two Towers by J.R.R. TolkienThe Return of the King by J.R.R. TolkienWatership Down by Richard  Adams
GRRM Recommends
100 books — 15 voters
Ender’s Game by Orson Scott CardDune by Frank HerbertFahrenheit 451 by Ray BradburyAmerican Gods by Neil GaimanHyperion by Dan Simmons
Favorite Novels Which Won the Hugo Award
84 books — 1,614 voters

Prince of Thorns by Mark  LawrenceA Game of Thrones by George R.R. MartinThe Blade Itself by Joe AbercrombieLast Argument of Kings by Joe AbercrombieBefore They Are Hanged by Joe Abercrombie
Best Dark Fantasy
532 books — 692 voters
The Great Dune Trilogy by Frank HerbertThe Foundation Trilogy by Isaac AsimovThe Ultimate Hitchhiker’s Guide to the Galaxy by Douglas AdamsThe Ender Quartet Box Set by Orson Scott CardThe Hyperion Omnibus by Dan Simmons
Best Science Fiction Series
425 books — 1,095 voters

The Stand by Stephen  KingThe Road by Cormac McCarthyThe Hunger Games by Suzanne Collins1984 by George OrwellWorld War Z by Max Brooks
Best Post-Apocalyptic Fiction
1,242 books — 3,411 voters
Dune by Frank HerbertEnder’s Game by Orson Scott CardFoundation by Isaac Asimov1984 by George OrwellThe Martian Chronicles by Ray Bradbury
The Best Classical Science Fiction Works
112 books — 153 voters

Hyperion by Dan SimmonsDune by Frank HerbertEnder’s Game by Orson Scott CardFoundation by Isaac AsimovLeviathan Wakes by James S.A. Corey
Best Space Opera
1,082 books — 1,809 voters
A Game of Thrones by George R.R. MartinThe Lord of the Rings by J.R.R. TolkienThe Name of the Wind by Patrick RothfussThe Eye of the World by Robert JordanAmerican Gods by Neil Gaiman
Fantasy Books Written for Adults
1,300 books — 1,620 voters

Harry Potter and the Sorcerer's Stone by J.K. RowlingThe Lord of the Rings by J.R.R. TolkienA Game of Thrones by George R.R. MartinThe Name of the Wind by Patrick RothfussThe Chronicles of Narnia by C.S. Lewis
Best Fantasy Series, Trilogies, and Duologies
2,083 books — 11,740 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
3,671 books — 7,005 voters