OS: Windows V/7/8/8.1 - 64-Bit CPU: Intel Q6600 Core2 Quad @ 2.4Ghz (or AMD Phenom 7950 Quad-Core, AMD Athlon II X4 620 equivalent) RAM: 4GB Hard Drive Space Required: 15.0 GB Minimum Supported Video Cards: ATI Radeon HD 5770, NVIDIA GTX 650 DirectX: 11.0 Single System Multiplayer: 2-4 players + 1 keyboard on a PC Input: Keyboard, Mouse, Dual Analogue gamepad, VOIP Headsets