Best Adult Science Fiction

1.
Fahrenheit 451
Fahrenheit 451 3.97 avg rating — 2,718,973 ratings
2.
Contact
Contact 4.15 avg rating — 150,001 ratings
3.
Old Man's War (Old Man's War, #1)
Old Man's War (Old Man's War, #1) 4.23 avg rating — 216,473 ratings
4.
The Werewolf Principle
The Werewolf Principle 3.77 avg rating — 1,786 ratings
5.
Starship Troopers
Starship Troopers 4.01 avg rating — 241,840 ratings
6.
Ready Player One (Ready Player One, #1)
Ready Player One (Ready Player One, #1) 4.23 avg rating — 1,266,874 ratings
7.
Foundation's Friends
Foundation's Friends 4.19 avg rating — 3,661 ratings
7.
Robopocalypse
Robopocalypse 3.71 avg rating — 40,882 ratings
7.
Earth's Last War (Children of Destiny #1)
Earth's Last War (Children of Destiny #1) 3.52 avg rating — 60 ratings
7.
Dune (Dune, #1)
Dune (Dune, #1) 4.28 avg rating — 1,570,345 ratings
11.
The Mount
The Mount 3.65 avg rating — 1,620 ratings
11.
Amped
Amped 3.48 avg rating — 8,836 ratings
11.
The Hammer of God
The Hammer of God 3.71 avg rating — 9,116 ratings
14.
The Forever War (The Forever War, #1)
The Forever War (The Forever War, #1) 4.14 avg rating — 176,933 ratings
14.
The Mote in God's Eye (Moties, #1)
The Mote in God's Eye (Moties, #1) 4.07 avg rating — 72,231 ratings
14.
Ubik
Ubik 4.11 avg rating — 118,741 ratings
14.
The Hitchhiker’s Guide to the Galaxy (Hitchhiker's Guide to the Galaxy, #1)
The Hitchhiker’s Guide to the Galaxy (Hitchhiker's Guide to the Galaxy, #1) 4.22 avg rating — 1,970,031 ratings
14.
Ilium (Ilium, #1)
Ilium (Ilium, #1) 4.04 avg rating — 31,807 ratings
19.
The Left Hand of Darkness
The Left Hand of Darkness 4.10 avg rating — 209,462 ratings
19.
Redemption Ark (Revelation Space, #2)
Redemption Ark (Revelation Space, #2) 4.16 avg rating — 31,767 ratings
21.
The Girl, the Gold Watch & Everything
The Girl, the Gold Watch & Everything 4.01 avg rating — 2,150 ratings
21.
A Maze of Death
A Maze of Death 3.82 avg rating — 9,974 ratings
21.
Ender’s Game (Ender's Saga, #1)
Ender’s Game (Ender's Saga, #1) 4.31 avg rating — 1,449,762 ratings
21.
The Hollow Man
The Hollow Man 3.48 avg rating — 3,607 ratings
25.
The Stainless Steel Rat (Stainless Steel Rat, #4)
The Stainless Steel Rat (Stainless Steel Rat, #4) 3.92 avg rating — 16,448 ratings
25.
Accelerando
Accelerando 3.87 avg rating — 21,992 ratings
27.
The Uplift War (The Uplift Saga, #3)
The Uplift War (The Uplift Saga, #3) 4.07 avg rating — 27,223 ratings
27.
The Long Earth (The Long Earth, #1)
The Long Earth (The Long Earth, #1) 3.78 avg rating — 61,543 ratings
29.
Where Late the Sweet Birds Sang
Where Late the Sweet Birds Sang 3.84 avg rating — 10,835 ratings
29.
Pandora's Star (Commonwealth Saga, #1)
Pandora's Star (Commonwealth Saga, #1) 4.23 avg rating — 52,782 ratings
31.
The Puppet Masters
The Puppet Masters 3.89 avg rating — 33,861 ratings
32.
Crystal Singer (Crystal Singer, #1)
Crystal Singer (Crystal Singer, #1) 4.13 avg rating — 21,706 ratings
33.
Sunburst
Sunburst 3.33 avg rating — 98 ratings