Minimum: OS: Windows XP SP3 (1GB RAM) / Windows 7 / Vista (1.5 GB RAM) Processor: Intel Core 2 Duo 1.86 GHz Memory: 1 GB RAM Graphics: Intel HD 3000 / Geforce GT 540M DirectX®: 9.0 Hard Drive: 2 GB HD space Additional: Minimum Spec is assuming you will use a resolution of 848x480, with no antialising, giving a performance of 60FPS. OS Windows Service Packs are as follows; XPSP3 – Vista SP2 – Win7 SP1