GURPS Basic Set: Campaigns combines information from the Third Edition GURPS Basic Set and GURPS Compendium II - plus our new core setting, with infinite possibilities for timeline-hopping adventure! (You don't have to play in the core setting - there isn't some game-altering metaplot - but it's there if you want it.) This 240-page, full-color PDF contains everything a GM needs to create and run a GURPS Fourth Edition campaign.