StarCraft 2: Wings of Liberty (PC) CD key

In this sequel to the popular strategy game a single player campaign follows the Brood War four years later, and there are the same characters and the three familiar races. How is it possible that Terrans are in the game when they were destroyed at the end of Brood War? The Blizzard representative replied that they come from a dark realm of the Terran Dominion, and he also suggested that the ancient cosmic race called Xel Naga will play a role in the story. Terrans will be helped by the cool unit called Reapers, which can overcome the rough terrain with their jet packs.