Since time immemorial, mankind has been looking up at the stars and dreaming, but it was only centuries ago that we started turning those dreams into fiction. And what remarkable dreams they are—dreams of distant worlds, unearthly creatures, parallel universes, artificial intelligence, and so much more. Today, we call those dreams science fiction.
Science fiction’s earliest inklings began in the mid-1600s, when Johannes Kepler and Francis Godwin wrote pioneering stories about voyages to the moon. Some scholars argue that science fiction as we now understand it was truly born in 1818, when Mary Shelley published Frankenstein, the first novel of its kind whose events are explained by science, not mysticism or miracles. Now, two centuries later, sci-fi is a sprawling and lucrative multimedia genre with countless subgenres, such as dystopian fiction, postapocalyptic fiction, and climate fiction, to name just a few. It’s also remarkably porous, allowing for some overlap with genres like fantasy and horror.
Sci-fi brings out the best in our imaginations and evokes a sense of wonder, but it also inspires a spirit of questioning. Through the enduring themes of sci-fi, we can examine the zeitgeist’s cultural context and ethical questions. Our favorite works in the genre make good on this promise, meditating on everything from identity to oppression to morality. As the Nobel Prize-winning novelist Doris Lessing said, “Science fiction is some of the best social fiction of our time.”
Over two years ago, we published a version of this list featuring 50 books. But why stop at 50? Now, as part of our latest Summer Fiction Week, we’ve cast a wider net and expanded the list to 75 titles. Choosing the 75 best science fiction books of all time wasn’t easy, so to get the job done, we had to establish some guardrails. Though we assessed single installments as representatives of their series, we limited the list to one book per author. We also emphasized books that brought something new and innovative to the genre—to borrow a great sci-fi turn of phrase, books that “boldly go where no one has gone before.”
Now, in ranked order, here are the best science fiction books of all time.
#1
181 • 2,537 Readers • 353 pages • 3.8
#2
#3
20 • 885 Readers • 182 pages • 4
#4
#5
1979 • 904 Readers • 292 pages • 4.3
#6
#4 of 9 in Hainish Cycle
1969 • 1,279 Readers • 267 pages • 4.1
#7
2000 • 1,735 Readers • 282 pages • 3.8
#8
2008 • 892 Readers • 208 pages • 4.3
#9
2014 • 1,801 Readers • 333 pages • 4.1
#10
1968 • 1,674 Readers • 223 pages • 4
#11
#1 of 4 in Remembrance of Earth's Past
2006 • 2,988 Readers • 400 pages • 3.9
#12
1949 • 5,623 Readers • 328 pages • 4.2
#13
2018 • 215 Readers • 144 pages • 3.6
#14
1930 • 2,954 Readers • 332 pages • 3.9
#15
2010 • 233 Readers • 257 pages • 3.3
#16
#17
1953 • 680 Readers • 212 pages • 4
#18
1972 • 515 Readers • 226 pages • 4
#19
1959 • 514 Readers • 322 pages • 4
#20
#1 of 1 in Canopus in Argos: Archives Series,
1979 • 12 Readers • 364 pages • 3
#21
#22
#23
#24
#25
1992 • 79 Readers • 416 pages • 3.9
#26
2017 • 115 Readers • 3.7
#27
#1 of 3 in 1Q84
2009 • 884 Readers • 1,184 pages • 3.7
#28
#29
#30
2023 • 154 Readers • 380 pages • 3.6
#31
1978 • 1,534 Readers • 1,553 pages • 4.2
#32
#33
#34
2009 • 516 Readers • 336 pages • 4
#35
2015 • 158 Readers • 432 pages • 3.3
#36
1992 • 196 Readers • 3.4
#37
1979 • 42 Readers • 209 pages • 4
#38
#1 of 4 in Wayfarers
2014 • 1,456 Readers • 423 pages • 4.1
#39
2000 • 143 Readers • 3.3
#40
2021 • 3,729 Readers • 496 pages • 4.4
#41
#1 of 2 in St. Leibowitz
1959 • 573 Readers • 334 pages • 3.9
#42
#1 of 6 in The Hitchhiker's Guide to the Galaxy
1979 • 3,545 Readers • 215 pages • 4.2
#43
#44
1955 • 371 Readers • 278 pages • 3.9
#45
#1 of 3 in Sprawl
1984 • 1,746 Readers • 271 pages • 3.8
#46
2022 • 393 Readers • 312 pages • 4.1
#47
2017 • 263 Readers • 351 pages • 3.9
#48
43 Readers • 4.5
#49
1894 • 1,118 Readers • 140 pages • 3.7
#50
#51
1966 • 560 Readers • 288 pages • 3.8
#52
1962 • 1,381 Readers • 149 pages • 3.9
#53
1961 • 661 Readers • 7h 42m • 3.8
#54
#1 of 3 in Children of Time
2015 • 1,599 Readers • 600 pages • 4.3
#55
#56
2020 • 39 Readers • 305 pages • 3.3
#57
2019 • 2,292 Readers • 223 pages • 3.9
#58
1967 • 234 Readers • 303 pages • 3.7
#59
#2 of 5 in The Book of the New Sun
1981 • 105 Readers • 303 pages • 4
#60
#62
#63
1949 • 14 Readers • 205 pages • 3
#64
#65
1963 • 150 Readers • 236 pages • 4.1
#66
2000 • 170 Readers • 304 pages • 3.6
#67
1985 • 595 Readers • 453 pages • 4.1
#68
110 Readers • 3.7
#69
1992 • 1,449 Readers • 448 pages • 3.9
#70
2000 • 63 Readers • 356 pages • 4.1
#71
2020 • 24 Readers • 4.5
#72
2024 • 105 Readers • 336 pages • 4.3
#73
2012 • 692 Readers • 318 pages • 3.9
#74
#1 of 4 in Lady Astronaut Universe
2018 • 529 Readers • 384 pages • 4.1
#75
2021 • 346 Readers • 256 pages • 3.6