Counter-Strike: Global Offensive (CS:GO) is an online tactical and first-person shooter video game. It is developed by Valve Corporation and Hidden Path Entertainment. It is the fourth game in the main "Counter-Strike" franchise. It was released on August 21, 2012. It is available for Microsoft Windows and OS X on Steam, Xbox 360 on the Xbox Live Arcade, and a US-only version for the PlayStation 3 on the PlayStation Network.