Literature has had a long history of being adapted into cinema, creating some of the greatest and most influential stories ever put to film.
The popularity of such films also makes their source material more well known as a result. However, many great sci-fi films have actually been based on novels you might not have even known about.
NOTE: SPOILERS AHEAD!!!
20. World War Z

19. The War of the Worlds (1953 & 2005)

18. Ready Player One

17. The Hunger Games films

16. Minority Report

15. The Iron Giant

14. Arrival

13. Annihilation

12. Invasion of the Body Snatchers

11. Metropolis

10. The Martian

9. Frankenstein (1931)

8. The Thing (1982)

7. A Clockwork Orange

6. Dune (2021)

5. Planet of the Apes (1968)

4. Children of Men

3. Jurassic Park

2. Blade Runner

1. 2001: A Space Odyssey
