This volume is the basic rules set for the Traveller science-fiction game system, fourth edition.

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.