15. Starcraft II: Heart of the Swarm
Starcraft II: Heart of the Swarm is the first expansion pack to Starcraft II, and the second chapter in a planned trilogy of games. The game's campaign takes place after the events of the first game and you take on the role of Sarah Kerrigan and the Zerg race in an all new single-player campaign.
Like the first game, you'll decide how to proceed through the campaign by choosing your missions and your army's upgrades—which now in the form of Zerg evolutionary enhancements.
The multiplayer portion of the game, which is arguably what most people are going to get the game for, is also getting some major additions with new buildings, units, and associated strategies.
Release Date: Available Now