Civilization V Deluxe

Minimum requirements

Windows XP SP3
Intel Core 2 Duo 1.8Ghz or AMD Athlon 64 X2 2.0Ghz Processor
2 GB RAM
8 GB free disk space
DVD Drive for disc-based installation
256 MB ATI 2600 XT/nVidia 7900 GS or better video card, or Core i3 or better integrated graphics
DirectX 9.0c-compatible sound card