In order for you to play DIG IT! - A Digger Simulator on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
MAC OS X 10.6.8 (Snow Leopard), 10.7.5 (Lion), 10.8.5 (Mountain Lion) or 10.9.4 (Mavericks)
Processor (CPU):
Intel quad-core processor running at 3.1 GHz (Intel Core i5 2nd gen or newer architectures) # 4 GB RAM or better for MAC OS X 10.6.8 (Snow Leopard), 10.7.5 (Lion), 10.8.5 (Mountain Lion) or 10.9.4 (Mavericks)
Memory (RAM):
4 GB RAM
Graphics Card:
Intel integrated or mobile graphic card, with at least 768MB of dedicated or shared VRAM and with at least Shader Model 5.0 support. Intel HD4000 and above are minimum required graphic cards.
Storage:
3 GB available space
Sound Card:
Integrated sound card