The Queen of Blades is gone. On the hellish planet Char, Jim Raynor harnessed the power of an ancient Xel'Naga artifact in a desperate bid to stop the zerg Swarm from overrunning the Koprulu sector, and the artifact restored Sarah Kerrigan to her human form. Without their queen to guide and unify them, the Swarm has fractured into several broods scattered throughout the Koprulu sector. One of the greatest threats to the galaxy has been neutralized... or so it seems. This next exciting expansion will feature: Groundbreaking Zerg-focussed single-player "story-mode" campaign Fast-paced, hard-hitting, tightly balanced competitive real-time strategy gameplay that recaptures and improves on the magic of the original game Three completely distinct races: Protoss, Terran, and Zerg New units and gameplay mechanics further distinguish each race Vibrant new 3D-graphics engine with support for dazzling visual effects and massive unit and army sizes Full multiplayer support, with new competitive features and matchmaking utilities available through Battle. - StarCraft II: Heart of the Swarm (PC)