StarCraft II uses a unified client, meaning downloading the free "Starter Edition" or the base game provides the full game data. StarCraft 2 system requirements - Can You RUN It
: All Co-op Commanders are free to play up to level 5. Commanders Raynor, Kerrigan, and Artanis are completely free with no level cap. Starcraft 2 Wings of Liberty Download PC Game
As of November 2017, transitioned to a free-to-play model. StarCraft II uses a unified client, meaning downloading
: Access to the Unranked and Versus AI modes is free immediately. Access to the Ranked Ladder is unlocked for free after achieving 10 "First Wins of the Day" in Unranked or Versus AI modes. StarCraft II uses a unified client