7th Sigma by Steven GouldEmergency Skin by N.K. JemisinThe Skinner by Neal Asher
Biotech Science Fiction
30 books — 8 voters
The Tar-Aiym Krang by Alan Dean FosterNor Crystal Tears by Alan Dean FosterAcorna by Anne McCaffreyA Beautiful Friendship by David  WeberYoung Miles by Lois McMaster Bujold
Teenagers . . . IN SPACE!
472 books — 732 voters

To Hold the Bridge by Garth Nix
Best Young Adult Books
13,092 books — 80,177 voters

The Sisters of Saint Nicola of The Almost Perpetual Motion vs... by Garth Nix
Best Steampunk Books
1,247 books — 4,096 voters
Footfall by Larry NivenProtector by Larry NivenAcorna by Anne McCaffreyThe Cluster Series by Piers AnthonyThe Uplift War by David Brin
Alien protagonists
128 books — 62 voters

Reserved for the Cat by Mercedes Lackey
Gaslamp Fantasy
211 books — 182 voters
Spider Legs by Piers Anthony
Giant Monster Kaiju Novels
126 books — 27 voters

Virals by Kathy ReichsSeizure by Kathy Reichs
YA Books Far Better than Twilight
3,219 books — 4,874 voters

Greegs & Ladders by Zack MitchellThe Tar-Aiym Krang by Alan Dean Foster
Intriguing Aliens
262 books — 147 voters
Starship Troopers by Robert A. HeinleinOn Basilisk Station by David  WeberBolo by Keith LaumerBerserker by Fred SaberhagenShards of Honour by Lois McMaster Bujold
Best Military Science Fiction Books
693 books — 850 voters

The Rowan by Anne McCaffreyPegasus in Flight by Anne McCaffreyDragonflight by Anne McCaffreyJhereg by Steven Brust
Best Novels About Telepaths
205 books — 134 voters
On a Pale Horse by Piers AnthonyA Dirty Job by Christopher MooreBearing an Hourglass by Piers Anthony
Most Interesting Magic System
2,646 books — 8,768 voters