The Galactic Patrol is the army and police force of the Civilization that fills two galaxies. Its prime agents are the Lensmen . . . incorruptible, powerfully psionic, ready for anything. They stand between Civilization and the ancient evil of Eddore. The Eddorians infiltrate with drugs, crime and corruption. The Lensmen fight back with everything from blasters to space fleets.Players take the part of Lensmen, ultra-tech warriors for good from many alien races. Major characters, important planets, weapons, and the Lens itself are described for player and GM use. The "Space Opera Combat System" lets referees quickly moderate space battles to determine who won and what happened to the major characters.