User Summary: The Koros core rules are made up of 6 booklets slipped into the gamemaster screen. - the rules book (8 pages) contains the standard Universom rules - the Civilization book (24 pages) describes the world of Koros (history of the moons of Koros, fauna, spaceships, medicine, robots and other gear) and adds setting-specific rules (character creation, psychic combat, space travel) - the third book (20 pages) is a scenario called "Les Damnés", with pre-generated characters.