Valve Software launched their much anticipated first person action/puzzle game today. This represents a simultaneous Mac launch alongside Windows, Playstation 3, and Xbox 360 releases. Portal 2 is available through Valve's Steam online store as well as through traditional retailers.
Portal 2 is the sequel to the critically acclaimed Portal. Portal was a relatively short game featuring physics based puzzles in which the player manipulated two different teleporting portal entrance. Portal 2 picks up where the original left off and continues to challenge players with platforming and physics-based puzzles using the same portal gun. Forum user aznguyen316 has already installed it on his 2011 15" MacBook Pro with AMD 6750 and found that it runs very well on maxed out settings. This YouTube video shows the first 10 minutes of the game running on his MacBook Pro.
Early reviews of the game are overwhelmingly positive. Portal 2 is available on Steam for $49.99.