OS: WINDOWS XP SP3/WINDOWS VISTA SP2/WINDOWS 7 Processor: AMD/INTEL DUAL-CORE 2.5 GHZ Memory: 1024 MB (XP)/2048 MB (VISTA/7) Graphics: 512 MB 100% DIRECTX 9 AND SHADERS 4.0 COMPATIBLE. ATI RADEON HD 3850/NVIDIA GEFORCE 8800 GT/INTEL HD 2000 OR HIGHER DirectX®: 9 Hard Drive: 2 GB Sound: DIRECTX 9 COMPATIBLE Internet: INTERNET CONNECTION REQUIRED FOR THE GAME ACTIVATION