Blizzard Entertainment has made its iconic StarCraft military strategy game free for Mac users ahead of the release of StarCraft: Remastered, a new version of the classic game complete with crisply updated graphics. For those who haven’t already invested countless hours in this series, StarCraft puts the player in the middle of a struggle for survival between three space-faring races: humans (or Terrans in the game), the buglike Zerg and the mysterious Protoss. Each race has its own units and structures with unique abilities, leaving the player to gather resources and figure out how to best upgrade their forces to combat a variety of threats. The free download also includes the StarCraft: Brood War expansion.