Aliens is a 1986 American science fiction action horror film written and directed by James Cameron, produced by 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 in 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 were interested in a follow-up to Alien as soon as its 1979 release, but the new management at 20th Century Fox postponed those plans until 1983. That year Brandywine picked Cameron to write after reading his script for The Terminator; when that film became a hit in 1984, Fox greenlit Aliens with Cameron as director and a budget of approximately $18 million. The script was written with a war film tone influenced by the Vietnam War to contrast the horror motifs of the original Alien. It was filmed in England at Pinewood Studios and at a decommissioned power plant in Acton, London.
Aliens grossed $180 million worldwide. It was nominated for seven Academy Awards, including a Best Actress nomination for Sigourney Weaver, winning both Sound Effects Editing and Visual Effects. It won eight Saturn Awards, including Best Science Fiction Film, Best Actress for Weaver and Best Direction and Best Writing for Cameron. Aliens is considered one of the best films in its genre.