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REFERENCES
1979 ALIEN by Ridley Scott and 20th Century Fox
1980 Journal of the Travellers' Aid Society #4: The Bestiary: Reticulan Parasite by Chuck Kallenbach III
1981 SpaceGamer 37: Alien for Traveller & D&D
1991 ALIENS Adventure Game and Living Steel by Leading Edge Games
1993 Amazing Engine: Bughunters by TSR
1999 Timeline Easter Egg from the ALIEN 20th Anniversary Collector DVD
2001 D20 Modern adaptation by Dan McCallister
2002 Alien Fuzion 3.0
2003 ALIENS: Game Over D20 adaptation
2007 Star Frontiersman #5: Xenomorphs
2014 ALIEN: Isolation Copyright 2014 by 20th Century Fox, Creative Assembly, and Sega
2015 ALIEN: Isolation Steam Community map post by Delmont
2017 HOSTILE: Alien Breeds by Zozer Games
2018 Xenomorphs for D20 5E
2019 Outworld by Zozer Games
2019 ALIEN: The Blueprints by Graham J. Langridge
2019 Year Zero Engine (OGL) standard reference document used in the ALIEN RPG by Fria Ligan
2020 Canon Lists from Defining Canon in an Alien World by Andrew E.C. Gaska
2023 Year Zero Engine 1.0 (FTL) updated standard reference document used in the ALIEN RPG by Fria Ligan
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