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Plana, Gary. Prime Directive: Roleplaying in the Star Fleet Universe, updated for GURPS 4th Edition. Additional material by Stephen V. Cole, Matthew Francois, Loren Knight, and Alex Chabot. Edited by Steven P. Petrick and Leanna M. Cole. Cover by Dennis Calero. Illustrations by Alvin Belflower, Dale McKee, Peter Bakija, and Robert Hubby. Computer graphics by Ted Geibel, Aaron Hendricks, and Stephen V. Cole. Deck Plans by Nick Blank. GURPS System Design by Steve Jackson. GURPS Line Editor: Sean "Dr. Kromm" Punch. SJ Games Playtest Review by Robert Gilson. Some background elements were originally created for the first edition of Prime Directive by Timothy D. Olsen and Mark Costello. Amarillo Design Bureau, Inc. 1 May 2006.