Windows
OS:Windows XP/Vista/7
Processor: Intel® Pentium® IV 2.4 GHz or AMD 3500+
Memory:2 GB RAM
Graphics:NVIDIA® GeForce 8800 or ATI Radeon® X1900 video card, 512Mb graphics memory required
Hard Drive:2 GB HD space
Sound:DirectX compatible sound card
Other Requirements:Broadband Internet connection
Additional:3-button mouse, keyboard, speakers, Internet connection for multiplayer, resolution at least 1024 x 768, Requires the base game Crusader Kings II