Starcraft II: Heart of the Swarm is the second real-time strategy (RTS) game in the trilogy StarCraft II, developed by Blizzard Entertainment for Microsoft Windows and Mac OS. The expansion to StarCraft II: Wings of Liberty, it focuses on the zerg campaign, featuring Sarah Kerrigan.

StarCraft is a real-time strategy series of Sci-fi developed by Blizzard Entertainment for Microsoft Windows and Mac OS. The game pits the three races: Terrans, Zerg and Protoss in the battle for the galactic supremacy.