Starcraft: Brood Wars

The expansion pack to Starcraft offers a wide vareity of new content. Each of the three races campagins are entirely new, expanding on the story in the first game. Each race gains new units as well. The Protoss now have Dark Templars and Dark Archons (previously seen in Starcraft, but could not be controlled). The Dark Archons cannot fight directly, but are able to take control of the minds of the enemies troops, turning them against their former masters. The Terrans now have the Medic, an infantry healing unit that augments the main fighting force. The Zerg get the Lurker, Gurdian, and Devourer. The lurker is an evolved form of a Hydralisk that cannot attack above ground, but when it burrows it shoots a trail of spikes across the ground at enemies. Gurdians and Devourers are evolved from Mutalisks. Gurdians specialize in air to ground combat while Devourers attack units in the air. In addition to the new units, there are also new technologies to research.