StarCraft improved on its predecessor Warcraft II, which showcased two incredibly related playable factions, by introducing asymmetry amongst the units and technologies available to its three races (Protoss, Terran, and Zerg). This asymmetry was comparable to that pioneered from the lesser-regarded 1996 SSI release War Wind. The unit kinds accessible to Each individual race determine its racial identification. The Protoss can area potent and expensive warriors and equipment, when the Zerg rely on sheer numbers and velocity to overwhelm their opponents.

In Legacy of the Void, Zeratul invades a Terran set up under Charge of Amon 헬스케어 in order to pinpoint the precise locale of his resurrection, Profiting from a unexpected assault by Kerrigan plus the Zerg swarm. Immediately after getting the precise spot, he departs to an historical Xel'Naga temple in which he includes a vision of Tassadar, who prompts him to claim the artifact in possession of the Terrans. Zeratul returns to alert Artanis of Amon's return, but he decides to carry on along with his options of foremost his army to reclaim Aiur. Amon awakens on Aiur and will take control of the majority of the Protoss race in the Khala, the telepathic bond that unites all thoughts for that Khalai faction on the Protoss.