StarCraft improved on its predecessor Warcraft II, which featured two very identical playable factions, by introducing asymmetry concerning the models and systems available to its three races (Protoss, Terran, and Zerg). This asymmetry was similar to that pioneered in the lesser-recognised 1996 SSI launch War Wind. The unit varieties available to each race determine its racial identification. The Protoss can discipline potent and expensive warriors and equipment, when the Zerg rely on sheer numbers and velocity to overwhelm their opponents.

The Tale concentrates on the activities of three species in the Component of the Milky Way often called the Koprulu Sector. Millennia prior to any on the gatherings of your game titles, a species known as the Xel'Naga genetically engineer the Protoss and later the Zerg in attempts to produce pure beings.[11][12] These experiments backfire along with the Xel'Naga are mostly ruined because of the Zerg.[twelve] Generations right before the start of StarCraft in 2499, the hardline Intercontinental government of Earth, the United Earth Directorate (UED), 헬스케어 commissions a colonization program as part of a solution to overpopulation.