GURPS Prime Directive

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GURPS Prime Directive
GURPS Prime Directive, 4th edition
Publisher(s) Steve Jackson Games
Publication date 2002 (3e)
2005 (4e)
System(s) GURPS

GURPS Prime Directive is a sourcebook for GURPS, first published in 2002. It is named after the Prime Directive in Star Trek, the universe it adapts. It spawned several associated sourcebooks.


GURPS Prime Directive allows players to play virtually any type character they wished, and also allowed some cross-genre moves to be made, and to include some limited elements of the Traveller Universe.

Publication history[edit]

After the folding of Task Force Games and the cancellation of the original Prime Directive line, Amarillo Design Bureau, Inc., the new publishers of Star Fleet Universe games, were left with the question of what to do with PD. They were primarily a wargame company, and the poor sales of the supplements were cause for a reexamination.[1] Eventually, they approached Steve Jackson Games to utilize the Powered by GURPS format.[2]

GURPS Prime Directive, as a "Powered by GURPS" book line, appeared in 2002 and was licensed for publication by Amarillo Design Bureau to portray the world of Star Fleet Battles.[3]:111 Task Force Games produced GURPS Prime Directive for third-edition GURPS (2000) and GURPS Prime Directive for fourth-edition GURPS (2004).[3]:118 Amarillo Design Bureau continued to publish their Prime Directive books for GURPS, d20, and d20 Modern.[3]:111

Originally GURPS Prime Directive, the GURPS Klingons imperial source book and GURPS Module Prime Alpha module were released under the third edition of GURPS. The new fourth edition of GURPS prompted a rework of the previous major books (GPD and GK) and a delay of the (then) upcoming Romulans sourcebook (which became one of the first 4th Edition GURPS supplements). Module Prime Alpha (and its intended sequel, Module Prime Beta) were dropped from the line, due to poor sales.

At this writing, the following GURPS 4th Edition books are available, the core rulebook, GURPS Klingons, GURPS Romulans and GURPS Federation have been released for this new system. Supplements for the Gorns, Tholians and other empires/races are in various writing stages.


Additional books produced as a subseries of PD include:

  • GURPS Federation
  • GURPS Klingons
  • GURPS Romulans
  • Dread Pirate Aldo
  • Planet Aldo
  • Starship Aldo


GURPS Prime Directive was reviewed in White Wolf #48.

Reviewed in Valkyrie #1.


  1. ^ Captain's Log #18, Amarillo Design Bureau, Inc. A WHOLE NEW COMPANY (ADB, 1999)
  2. ^ Pook, Matthew. "GURPS Prime Directive (Review)". Retrieved 2007-11-04. 
  3. ^ a b c Shannon Appelcline (2011). Designers & Dragons. Mongoose Publishing. ISBN 978-1-907702-58-7.