The Last Policeman by Ben H. WintersAlas, Babylon by Pat FrankEnder’s Game by Orson Scott CardFahrenheit 451 by Ray Bradbury
Dystopia!
1,252 books — 2,832 voters
11/22/63 by Stephen  KingThe Forever War by Joe HaldemanDark Matter by Blake Crouch
Best Time Travel Fiction
2,273 books — 5,582 voters

11.22.63 by Stephen  KingProject Hail Mary by Andy WeirEarth Abides by George R. StewartThe Hitchhiker's Guide to the Galaxy by Douglas AdamsWool by Hugh Howey
Best Books Ever
80,175 books — 299,022 voters
Not Till We Are Lost by Dennis E. Taylor11.22.63 by Stephen  KingOutland by Dennis E. TaylorEarth Abides by George R. StewartThe Mercy of Gods by James S.A. Corey
S&L Top-100 Science Fiction, Fantasy Titles
1,784 books — 2,333 voters

The Plot Against America by Philip RothHow Few Remain by Harry TurtledoveFatherland by Robert   HarrisRed Mars by Kim Stanley Robinson
Best Alternate History Novels and Stories
797 books — 1,381 voters
Wool Omnibus by Hugh HoweyAlas, Babylon by Pat FrankThe Andromeda Strain by Michael CrichtonEarth Abides by George R. StewartParable of the Sower by Octavia E. Butler
Adult Dystopian Books
149 books — 257 voters

The Plot Against America by Philip RothHow Few Remain by Harry Turtledove
Best Alternate History
398 books — 719 voters

Dungeon Crawler Carl by Matt Dinniman
LitRPG Apocalypse (Audiobook)
31 books — 14 voters
We Are Legion (We Are Bob) by Dennis E. Taylor
Most Under-rated Science Fiction
2,200 books — 2,720 voters

Project Hail Mary by Andy Weir
Science Fiction - 2020-2029
290 books — 312 voters
The Hitchhiker’s Guide to the Galaxy by Douglas AdamsWe Are Legion (We Are Bob) by Dennis E. TaylorOld Man's War by John ScalziThe Restaurant at the End of the Universe by Douglas AdamsLife, the Universe and Everything by Douglas Adams
Best Comedic Science Ficttion Books
651 books — 1,231 voters

Project Hail Mary by Andy WeirFugitive Telemetry by Martha Wells
Can't Wait Sci-Fi/Fantasy of 2021
622 books — 1,502 voters

Red Rising by Pierce Brown
Hidden Gems of Science Fiction
525 books — 428 voters
Red Rising by Pierce BrownOld Man's War by John ScalziGolden Son by Pierce Brown
Best Space Opera of the 21st Century
252 books — 528 voters

Wool Omnibus by Hugh Howey1984 by George OrwellFahrenheit 451 by Ray Bradbury
Best Post-Apocalyptic Fiction
1,332 books — 3,624 voters
Project Hail Mary by Andy WeirThe Hitchhiker's Guide to the Galaxy by Douglas AdamsRed Rising by Pierce BrownWool Omnibus by Hugh HoweyWe Are Legion (We Are Bob) by Dennis E. Taylor
Best Science Fiction
3,958 books — 8,227 voters

Project Hail Mary by Andy WeirWool Omnibus by Hugh HoweyRed Rising by Pierce BrownAll Systems Red by Martha WellsGolden Son by Pierce Brown
Best Science Fiction of the 21st Century
1,236 books — 9,186 voters
Project Hail Mary by Andy WeirThe Hitchhiker’s Guide to the Galaxy by Douglas AdamsWool Omnibus by Hugh HoweyRed Rising by Pierce BrownWe Are Legion (We Are Bob) by Dennis E. Taylor
Best Science Fiction & Fantasy Books
8,931 books — 26,343 voters

Dungeon Crawler Carl by Matt Dinniman
Best System Apocalypse Books
32 books — 71 voters

Dungeon Crawler Carl by Matt DinnimanHe Who Fights with Monsters 1 by Shirtaloon
Progression Fantasy/LitRPG Must Reads
70 books — 94 voters
Dungeon Crawler Carl by Matt DinnimanHe Who Fights with Monsters 1 by Shirtaloon
LitRPG - GameLit
372 books — 201 voters

Dungeon Crawler Carl by Matt DinnimanHe Who Fights with Monsters 1 by ShirtaloonSurvival Quest by Vasily MahanenkoStuff and Nonsense by Andrew SeipleDungeon Madness by Dakota Krout
Best LitRPG books (ALL)
572 books — 826 voters