The Zerg have evolved! The Zerg have always been a fast paced race and that has not changed much. Units such as the Zergling, hydralisk, mutalisk, drone, are all returning to the game. So what's changing? First off a few new units such as the Corruptor and the Infestor have been added to the game. The largest difference is that the Zerg will have a new special unit: The Queen, which is a base defender unit that can be upgraded, cast spells, and upgrade base defenses. Probably the coolest thing about the Queen is that she can turn any of your buildings into defensive buildings. Another awesome feature is that all Zerg units can burrow, including the queen.