-OS: Windows XP/Vista (FAT 16/32 file systems not supported for Digital Download) -Processor: 2.0 GHz P4 processor or **********alent -Memory: XP needs 512 MB RAM / Vista needs 768 MB RAM -HDD: At least 300 MB of space for installation, & additional space for created creatures. (600 MB for digital download) -Video Card: A 128 MB Video Card, with support for Pixel Shader 2.0* -Input: Mouse,Keyboard