The systems requirements for the steam version are as follows.

■Minimum System Requirements
OS：Windows 7 64bit
CPU：Intel / AMD Dual Core CPU 1.6GHz
Memory： 2GB
Graphics：NVIDIA GeForce 8800 GT or GeForce GT 240 / ATI Radeon HD 4770 512MB
DirectX：Version 9.0c
Storage：10GB of free space
Sound Card：DirectSound supported sound card (DirectX 9.0)
OpenGL：2.0
Network：Required

■Recommened System Requirements
OS：Windows 7 64bit / Windows 8.1 64bit / Windows 10 64bit
CPU：Intel Core 2 Quad 2.66GHz or Core i5 2.4GHz or greater
Memory：3GB or more
Graphics：NVIDIA GeForce GTX 460 or GeForce GTX 750 / ATI Radeon HD 5770 512MB or more
DirectX：Version 9.0c or higher
Storage：10GB or more of free space
Sound Card：DirectSound supported sound card (DirectX 9.0c or higher)
OpenGL：2.0 or higher
Network：Required