"Legacy of the Void" is the third and final expansion for the real-time strategy game series StarCraft II. Released in November 2015, it focuses on the Protoss race and their struggle against the Zerg and Terran factions. The expansion introduces new units, gameplay mechanics, and a campaign that explores the history and culture of the Protoss. The campaign follows Artanis, the leader of the Protoss, as he seeks to unite his people against the ancient threat of Amon. Players experience a mix of strategic battles and narrative-driven missions, culminating in a resolution to the overarching conflict in the StarCraft universe.