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Alien (1979)
Theatrical version (117 min.)
2003 director's cut (137 min.)

Aliens (1986)
Theatrical version (137 min.)
1991 special edition (154 min.)

Alien 3 (1992)
Theatrical version (114 min.)
2003 special edition (restored work print version) (155 min.)

Alien Resurrection (1997)
Theatrical version (109 min.)
2003 special edition (119 min.)