OS: Windows XP, Vista, 7
Processor: Pentium 4 3.0GHz or better
Memory: 512 MB RAM
Graphics: Must support 640x480 resolution. Certain laptops and onboard video cards may have compatibility issues.
DirectX: Version 9.0
Network: Broadband Internet connection
Hard Drive: 1 GB available space
Sound Card: DirectSound-compatible Sound Card
Additional Notes: Windows 8 is not yet officially supported, but Yatagarasu Attack on Cataclysm has been tested without problems on Win 8 laptops and desktops.