Minimum
Ubuntu 10 or later, 2000 MHz, 512MB RAM, 100MB HD space, 640x480 minimum resolution (Direct3D/OpenGL compatible card with at least 128MB)
Minimum
OS X 10.4 or later, Processor: 2000 MHz, 512MB RAM, 100MB HD space 640x480 minimum resolution (Direct3D/OpenGL compatible card with at least 128MB), 2D sound compatible card, DirectX®: 9.0c
Minimum
OS: Windows XP or later, 2000 MHz, 512MB RAM, 100MB HD space, 640x480 minimum resolution (Direct3D/OpenGL compatible card with at least 128MB), 2D sound compatible card, DirectX® 9.0c