In order for you to play AI War: Fleet Command on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
Mac OSX Intel CPU and "Snow Leopard" 10.6 or later
Processor (CPU):
1.6Ghz CPU (2.4 Ghz recommended, Dual Core strongly recommended for Host)
Memory (RAM):
2 GB RAM
Graphics Card:
Graphics card must support 1024x1024 textures (most 32MB and up graphics cards do), 1024x768 or greater (32 bit color recommended)
Hard Drive:
300MB
Multiplayer:
Broadband Internet Connection or LAN required for multiplayer.