The Martian by Andy WeirProject Hail Mary by Andy WeirSeveneves by Neal StephensonReady Player One by Ernest Cline
Best Science Fiction of the 21st Century
1,262 books — 9,069 voters
Gideon the Ninth by Tamsyn Muir
F/F Paranormal and Urban Fantasy
444 books — 572 voters

The Long Way to a Small, Angry Planet by Becky ChambersAll Systems Red by Martha WellsTrading in Danger by Elizabeth Moon
Space Opera Written By Women
248 books — 104 voters
Sassinak by Anne McCaffreyLeviathan Wakes by James S.A. CoreyTrading in Danger by Elizabeth MoonAltered Carbon by Richard K. Morgan
Excellent Space Opera
1,067 books — 3,746 voters

Trouble and Her Friends by Melissa ScottAmmonite by Nicola Griffith
Lesbian and Bisexual Women (etc) Sci Fi
222 books — 106 voters
Ender’s Game by Orson Scott CardDo Androids Dream of Electric Sheep? by Philip K. DickThe Ultimate Hitchhiker’s Guide to the Galaxy by Douglas AdamsThe Handmaid’s Tale by Margaret AtwoodThe Forever War by Joe Haldeman
Best Science Fiction & Fantasy Books
8,534 books — 24,897 voters