Minimum: OS:Windows XP Processor:Intel Core 2 Duo 2.8Ghz or equivalent Memory:2 GB RAM Graphics:2nd Generation Intel Core HD Graphics (2000/3000), or dedicated GPU with OpenGL 3.0 Support Hard Drive:500 MB HD space Sound:OpenAL-compatible Additional:See https://getsatisfaction.com/polytron/topics/support_for_intel_integrated_graphics_hardware for details on Intel HD Graphics support, not all models are supported. Latest graphics drivers are required to maximize OpenGL feature compatibility.