13. Alien (1979)

Alien is one of those horror movies from the 1970s and 1980s that has left an indelible mark on cinema. The popular movie spawned a whole franchise, which keeps getting rebooted to this day. The first movie, starring Sigourney Weaver and directed by Ridley Scott, follows a space crew that investigates an old spaceship, only to bring a deadly alien aboard.
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Edited by Apoorva Jujjavarapu