GURPS Traveller: Interstellar Wars covers the 200 years of war, peace, and overwhelming change as the ancient Vilani Imperium falls to the upstart Terrans. In this time of conflict, the opportunities for adventure are more exciting than ever before! Forge new trade routes within the Imperium itself. Defend the homeworld from invaders during the Siege of Terra. Make first contact with alien races. Help guide the Terran Confederation in its expansion from a single planet to a sector-spanning empire.
GURPS Traveller: Interstellar Wars is an official GURPS Fourth Edition sourcebook for the Traveller universe. It includes a detailed timeline, along with rules for tailoring characters to the last days of the First Imperium, starship design, interstellar trade, exploration, and ship-to-ship combat.