War of the Solstice is only available on the Windows platform.
It has been developed and tested on Windows 7 and 10.
Since the 3d features place some demands on the graphical capabilities of your system, you can use the following guide to check whether your system meets the minimum requirements.
Download the GPU-Z utility and run it up, and check the highlighted fields as shown.
DirectX Support >= 9.0 / SM 3.0
Memory Size >= 1024 Mb
The higher the Pixel Fillrate and Texture Fillrate, the more fluid the game will run at higher resolutions.
In addition the game needs around 1 Gb of free system memory, which most current systems should meet without problem.