A tightly paced campaign of excellent missions delivers plenty of choices in how players guide the Swarm to victory, even if some of those choices don’t seem to matter as much as they could. Appropriately, Blizzard makes those traits the centerpiece of the zerg-centric first expansion to StarCraft II. As one of the three central factions of the StarCraft universe, the monstrous zerg have always been defined by their focus on evolution and growth.
