In order for you to play Nuclear Dawn on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
Mac OS X 10.6.7 or higher, up to macOS 10.14
Processor (CPU):
Core 2 Duo 2.4 Ghz
Memory (RAM):
2GB RAM
Hard Disk Space:
6GB of free HDD space
Video Card:
ATI Radeon HD 2400 / NVidia GeForce 8600M / Intel HD Graphics 3000
Not Supported:
OS X 10.5.x, ATI X1600 or X1900 graphics, NVIDIA GeForce 7 graphics or Intel graphics less than Intel HD 3000.