Blizzard Entertainment announced StarCraft II for Mac, the sequel to its award-winning real-time strategy game StarCraft, at the 2007 Blizzard Worldwide Invitational event in Seoul, South Korea.

The developer committed to plans to release the game simultaneously on both the Mac and Windows platforms when it ships. The StarCraft series of games has sold 9.5 million copies so far

The real-time strategy game will feature the return of revised and updated versions of the Protoss, Terran, and Zerg races. New units and different gameplay mechanics and abilities will feature in the release.

StarCraft II will also feature a custom 3D-graphics engine with realistic physics and the ability to render several large, highly detailed units and massive armies on-screen simultaneously.

“With StarCraft II, we’ll be able to do everything we wanted to do with the original StarCraft and more,” said Mike Morhaime, president and co-founder of Blizzard Entertainment. “We recognize that expectations are high following the long-running popularity of the original game, but we plan to meet those expectations and deliver an engaging, action-packed, competitive experience that StarCraft players and strategy gamers worldwide will enjoy.”

As well as online multiplayer gaming, StarCraft II will include a single-player campaign. It will ship with a map editor based on Blizzard's own in-house level design tools.