From publisher blurb: Based on the cooperative card game, the "Invasion of the Saucer People" setting is a nostalgic treatment of 1950's sci-fi space adventure. Player characters can be rocketship crew or other adventturers in the Solar System—even a robot navigator or space monkey engineer! Travel among the worlds, from Earth to outposts on the Moon, Mercury, Venus, and Mars. Visit Ceres Station in the Asteroid Belt. Resupply observatories on the moons of outer planets, or on cold and distant Pluto. And defend the Solar System against the Saucer People's invasion! For use with the D6xD6 RPG created by Origins award winning designer Lester Smith, which features: Five-minute character creation. Quick-and-easy tactical combat rules. Endless setting possibilities.