Starcraft: Brood War is an expansion pack for the popular real-time strategy game Starcraft, developed by Blizzard Entertainment and released in 1998. It continues the story of three factions: the Terrans, Zerg, and Protoss, adding new units, campaigns, and gameplay mechanics. The game is known for its competitive multiplayer mode and has a significant impact on the esports scene. The expansion features a rich narrative that follows the aftermath of the original game's events, introducing new characters like Sarah Kerrigan and Jim Raynor. Brood War is praised for its balanced gameplay and strategic depth, making it a classic in the gaming community.