Prime Directive (role-playing game)
| Prime Directive, 1st edition | |
| Designers | Mark Costello (PD1), Timothy D. Olsen (PD1), Gary Plana (GURPS), Jonathan Thompson (PD20) | 
|---|---|
| Publishers | Amarillo Design Bureau Inc, (formerly)Task Force Games | 
| Publication | 1993 (1st edition) 2002 (GURPS edition) 2005 (D20 edition) 2008 (D20M edition) | 
| Genres | Science fiction (Star Trek) | 
| Systems | Custom, GURPS, D20, D20M, Traveller | 
| Part of the article series on | 
| Star Fleet Universe | 
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| Video games | 
Prime Directive is a role-playing game set in the Star Trek-derived Star Fleet Universe. The game has gone through two different incarnations.