Core rulebook, hardcover, AEG.

That's right! Sci-Fi Network's hottest television series is now an RPG! Play in a world of villainous Peacekeepers, mysterious aliens, and renegade prisoners in stolen Leviathans… A gorgeous full colour supplement that will appeal to fans of the show and Sci-Fi roleplayers alike! Packed full of information and utilising the d20 system to bring this epic setting to life, players can now create characters based on all the major races and professions seen in the show.