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Counter-Strike: Global Offensive (abbreviated as CS:GO) is an online first-person shooter developed by Valve Corporation and Hidden Path Entertainment, who also maintained Counter-Strike: Source after its release. It is the fourth game in the main Counter-Strike franchise.

Counter Strike Global Offensive was released on August 21, 2012, and made available for Microsoft Windows and OS X on Steam, Xbox Live Arcade, 

OS: Windows 7 / Vista / XP

Processor: 3.0 GHz P4, Dual Core 2.0 (or higher) or AMD64X2 (or higher)

Memory: 1GB XP / 2GB Vista

Hard Disk Space: At least 6 GB of Space

Video: Video card must be 128 MB or more and should be a DirectX 9-compatible with support for Pixel Shader 2.0b (ATI Radeon X800 or higher / NVIDIA GeForce 7600 or higher / Intel HD Graphics 2000 or higher).

Audio: DirectX 9.0c compatible.