Like its predecessor, the game revolves around three species: the Terrans (humans), the Zerg (a super-species of assimilated life forms), and the Protoss (a technologically advanced species with vast psionic powers).

Wings of Liberty has been free-to-play since November 2017. A sequel to the 1998 video game StarCraft and the Brood War expansion pack, the game is best known as the original installment of StarCraft II which was later followed by a number of expansion packs. It was released worldwide in July 2010 for Microsoft Windows and Mac OS X. StarCraft II: Wings of Liberty is a science fiction real-time strategy video game developed and published by Blizzard Entertainment.