Oooh, ought to point out that it's a SteveJacksonGames? game.
Yup. Famous for having more worldbooks than most systems have pages, and for those worldbooks being, generally, incredible resources for use in anything from another game to actual research. Research usage of the fantasy books being slightly more limited, of course. --Vitenka (There's a ReRelease? due any month now. And there has been for almost five years.) (And it's now out, and reasonably worth picking up if you're interested in seeing what changes have been made. It seems simpler (maybe oversimplified?) but much more streamlined than 3rd Ed. --Jwanders)