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The Greatest Sci-Fi Movies Of All Time

Updated October 7, 2020 504.2k votes 23.7k voters 461.9k views498 items

List RulesWhich science fiction films are the best? Vote up your favorites and add any that aren't already on the list.

What are the greatest sci-fi movies of all time? These good science fiction films are among the most popular movies in cinematic history, with films like Star Wars and Aliens keeping audiences on the edge of their collective seats for decades. This list includes these classics, and many more, so get ready to vote for your favorite sci-fi movies of all time.

Want to see more of the best Sci-Fi? Here are the Best Sci-Fi TV Shows of All Time

Great sci-fi films include stories of extraterrestrial life, time travel, space travel, robots and more. Some of these amazing science fiction movies are more fantasy-oriented, while others are a bit closer to reality. Either way, sci-fi films keep audiences rapt with tales of science and technology, combined, at times with the supernatural.

Some sci-fi films are based on classic novels or short stories by such heavyweight authors as H.G. Wells (War of the WorldsThe Invisible Man) or Philip K. Dick (Blade RunnerMinority Report).

What are the best sci-fi movies of all time? This list of the best sci-fi films is also crowd ranked, meaning you can rerank your own greatest sci-fi movies. Your reranks can change the overall order of the films on the list! Also, if you love sci-fi, check out this list of the best new sci-fi shows of the last few years. 

  • Photo: 20th Century Fox
    The Empire Strikes Back is a 1980 American epic space opera film directed by Irvin Kershner. Leigh Brackett and Lawrence Kasdan wrote the screenplay, with George Lucas writing the film's story and serving as executive producer. The second release in the Star Wars franchise, it was produced by Gary Kurtz for Lucasfilm Ltd and stars Mark Hamill, Harrison Ford, Carrie Fisher, Billy Dee Williams, Anthony Daniels, David Prowse, Kenny Baker, Peter Mayhew and Frank Oz. The film is set three years after Star Wars. The Galactic Empire, under the leadership of the villainous Darth Vader and the Emperor Palpatine, is in pursuit of Luke Skywalker and the rest of the Rebel Alliance. While Vader chases a...  more
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    • Alien is a 1979 science fiction horror film directed by Ridley Scott. The crew of the commercial space tug Nostromo encounter the eponymous Alien, a deadly and aggressive extraterrestrial set loose on the ship....  more
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      • Photo: Aliens / 20th Century Fox
        Aliens is a 1986 American science-fiction action horror film written and directed by James Cameron, produced by his then-wife Gale Anne Hurd, and starring Sigourney Weaver, Carrie Henn, Michael Biehn, Paul Reiser, Lance Henriksen, William Hope, and Bill Paxton. It is the sequel to the 1979 film Alien and the second installment of the Alien franchise. The film follows Weaver's character Ellen Ripley as she returns to the planet where her crew encountered the hostile Alien creature, this time accompanied by a unit of space marines. Gordon Carroll, David Giler and Walter Hill of Brandywine Productions, who produced the first film and the later sequels, were executive producers of Aliens. They...  more
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        • Blade Runner is a 1982 American neo-noir dystopian science fiction film directed by Ridley Scott and starring Harrison Ford, Rutger Hauer, Sean Young, and Edward James Olmos. The screenplay, written by Hampton Fancher and David Peoples, is a modified film adaptation of the 1968 novel Do Androids Dream of Electric Sheep? by Philip K. Dick. The film depicts a dystopian Los Angeles in November 2019, in which genetically engineered replicants, which are visually indistinguishable from adult humans, are manufactured by the powerful Tyrell Corporation as well as by other "mega-corporations" around the world. The use of replicants on Earth is banned and they are exclusively utilized for dangerous...  more
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