Island in the Sea of Time by S.M. StirlingCast Under an Alien Sun by Olan ThorensenWildside by Steven Gould1632 by Eric FlintFimbulwinter by E. William Brown
Displaced To A Different Time Or World
845 books — 334 voters
The Moon Is a Harsh Mistress by Robert A. HeinleinHyperion by Dan SimmonsStarship Troopers by Robert A. HeinleinDune by Frank HerbertA Fire Upon the Deep by Vernor Vinge
Favorite Novels Which Won the Hugo Award
84 books — 1,614 voters

A Hymn Before Battle by John RingoArmor by John SteakleyStarship Troopers by Robert A. HeinleinAll You Need Is Kill by Hiroshi SakurazakaLegion of the Damned by William C. Dietz
Powered Armor
107 books — 33 voters

Uprooted by Naomi NovikThe Way of Kings by Brandon Sanderson
Best Fantasy of the 2010s
1,630 books — 1,906 voters
Oathbringer by Brandon SandersonPersepolis Rising by James S.A. Corey
Can't Wait Science Fiction/Fantasy of 2017
333 books — 1,382 voters

The Martian by Andy WeirRed Mars by Kim Stanley RobinsonLeviathan Wakes by James S.A. CoreyAltered Carbon by Richard K. MorganThe Windup Girl by Paolo Bacigalupi
Hard SF reading group
83 books — 54 voters
Jurassic Park by Michael CrichtonThe Andromeda Strain by Michael CrichtonSphere by Michael CrichtonDaemon by Leinad Zeraus1984 by George Orwell
Best Technothrillers Ever
684 books — 995 voters

Replay by Ken GrimwoodThe Time Traveler's Wife by Audrey NiffeneggerIsland in the Sea of Time by S.M. Stirling
The Best Time Travel Books of All Time
813 books — 1,684 voters
Armada by Ernest ClineThe End of All Things by John Scalzi
Can't Wait Science Fiction/Fantasy of 2015
583 books — 3,038 voters

Ilium by Dan SimmonsAltered Carbon by Richard K. MorganThe Martian by Andy WeirPandora's Star by Peter F. HamiltonThe Dreaming Void by Peter F. Hamilton
Best Science Fiction of the 21st Century
1,203 books — 8,942 voters

World War Z by Max Brooks
Best Audio Narration
1,516 books — 1,048 voters
Ender’s Game by Orson Scott CardStarship Troopers by Robert A. HeinleinOld Man's War by John ScalziThe Forever War by Joe HaldemanOn Basilisk Station by David  Weber
Military Science Fiction
838 books — 1,133 voters

A Hymn Before Battle by John RingoOld Man's War by John ScalziStarship Troopers by Robert A. HeinleinOn Basilisk Station by David  WeberA Fire Upon the Deep by Vernor Vinge
Excellent Space Opera
1,011 books — 3,574 voters
Ender’s Game by Orson Scott CardDune by Frank HerbertHyperion by Dan SimmonsThe Moon Is a Harsh Mistress by Robert A. HeinleinTime Enough for Love by Robert A. Heinlein
Best Science Fiction & Fantasy Books
8,333 books — 24,590 voters

Time Enough for Love by Robert A. Heinlein
Books With Unforgettable Characters
9,439 books — 8,387 voters