Twelve years after the original StarCraft “zerged” its way onto computers, Blizzard’s sci-fi strategy game finally receives its sequel with Wings of Liberty. Once again the game features three rival factions: the gritty, gutty Terrans; the slithering, swarming Zerg; and the psionic, cybernetic Protoss. The single-player campaign focuses on the scrappy terrans, led by Jim Raynor, in a narrative spanning 29 missions. To help those new to the StarCraft universe, a number of mini-games are included to…