In order for you to play AI War 2 on Linux with minimal graphics settings, your computer must meet the following requirements
Operating System:
Ubuntu 12.04+, SteamOS+
Processor (CPU):
Dual Core 64bit CPU (2.2+ GHz Dual Core CPU or better)
Memory (RAM):
4 GB RAM
Graphics Card:
NVIDIA GTX 510+, Radeon HD5900+, or Intel HD4000+
Storage:
4 GB available space
In order to play AI War 2 on Linux with maximum graphics settings, you need a computer with a configuration no worse than the following
Processor (CPU):
Any Quad Core or 3.0+ GHz Dual Core CPU
Memory (RAM):
6 GB RAM
Graphics Card:
NVIDIA GTX 660 2GB / AMD HD 7870 2GB
Storage:
4 GB available space