In Star Wars: Age of Rebellion, you become a member of the Rebel Alliance, which is vastly outnumbered and outgunned in its war with the evil Galactic Empire. Onslaught at Arda I is an adventure supplement for Star Wars: Age of Rebellion which explores the themes of desperate struggles, tenuous alliances, and an overwhelming enemy. This 96-page adventure is set at Arda I, a secret rebel base, and features mass-combat rules that Game Masters can use to bring large battles to life, along with in-depth gazetteers that cover the Arda I base, and all-new adversary and vehicle profiles!