This volume is the basic rules set for the Traveller science-fiction game system. It contains the essential rules and background for a player to understand and participate in Traveller games as well as basic materials that enable a Traveller referee to administer a variety of adventures. The materials in this volume have a long history in print and in game play.Unravel the secrets of man's conquest of the stars. Create a heroic character to adventure throughout the known universe. Learn how adventurers fight for survival in deep space and hostile planets. Create and design new starships for your characters to explore the stars. Learn to unlock the powers of the mind. Discover new alien life forms as one interacts in strange new environments. Explore the possibilities of trading with other planets.