Starcraft II: Legacy of the Void is the third and final standalone expansion in the trilogy of titles which comprise the sequel to Blizzard's sci-fi real-time strategy game series. Legacy of the Void shifts the narrative focus of the single-player campaign to the Protoss, where players assume the role of Hierarch Artanis.
As Artanis, players will lead Protoss forces through around 20 new missions. The Protoss will splinter into several factions as the mysterious and advanced alien race struggles for survival, each with their own exclusive units, and players will be forced to choose sides as they progress through the campaign.
In addition to the Protoss, the Terra and Zerg factions will feature new units as well. All new units and faction changes, as well as gameplay rebalancing, will similarly apply to Starcraft II's multiplayer maps.
Blizzard is planning a Legacy of the Void beta test during the first half of 2015.