Aliens is a 1986 science fiction action film written and directed by James Cameron. It is the sequel to the 1979 science fiction horror film Alien, and the second film in the Alien franchise. Set in the far future, it stars Sigourney Weaver as Ellen Ripley, the sole survivor of an alien attack on her ship. When communications are lost with a human colony on the moon where her crew first saw the alien creatures, Ripley agrees to return to the site with a unit of Colonial Marines to investigate. Michael Biehn, Paul Reiser, Lance Henriksen, and Carrie Henn are featured in supporting roles.
Despite the success of Alien, its sequel took years to develop due to lawsuits, a lack of enthusiasm from 20th Century Fox, and repeated management changes. Although relatively inexperienced, Cameron was hired to write a story for Aliens in 1983 on the strength of his scripts for The Terminator (1984) and Rambo: First Blood Part II (1985). The project stalled again until new Fox executive Lawrence Gordon pursued a sequel. On an approximately 18.5millionbudget,AliensbeganprincipalphotographyinSeptember1985andconcludedinJanuary1986.Likeitsdevelopment,filmingwastumultuousandrifewithconflictsbetweenCameronandtheBritishcrewatPinewoodStudios.Thedifficultshootaffectedthecomposer,JamesHorner,whowasgivenlittletimetorecordthemusic.AlienswasreleasedonJuly18,1986,tocriticalacclaim.Reviewerspraiseditsaction,butsomecriticizedtheintensityofsomescenes.Weaver′sperformancegarneredconsistentpraisealongwiththoseofBillPaxtonandJenetteGoldstein.Thefilmreceivedseveralawardsandnominations,includinganAcademyAwardnominationforBestActressforWeaveratatimewhenthescience−fictiongenrewasgenerallyoverlooked.Itearned131.1–183.3 million during its theatrical run, making it one of the highest-grossing films of 1986 worldwide.
Aliens is now considered among the greatest films of the 1980s, and among the best science fiction, action, and sequel films ever made, arguably equal to or better than Alien.