Writing

2024

… Characters

2019		Alien: Specimen … Characters
2019		Alien: Ore … Characters
2019		Alien: Harvest … Characters
2019		Alien: Containment … Characters
2019		Alien: Night Shift … Characters
2019		Alien: Alone … Characters

2017

… Characters

2014

… Writer

2012		Total Recall … Screenstory
2012		Prometheus … Characters

2007

… Characters

2004

… Author … Screenplay

1997		Alien Resurrection … Characters
1997		Bleeders … Writer

1995

… Screenplay

1994

… Characters

1992

… Characters

1990

… Screenplay

1986		Aliens … Characters
1986		Invaders from Mars … Screenplay

1985		Lifeforce … Screenplay
1985		The Return of the Living Dead … Screenplay

1984

(1 episode) … Writer

1983

… Screenplay

1981

… Screenplay

1979

… Screenplay … Story

1974

… Screenplay

1969

… Writer

1968

… Writer