In order for you to play The Dig on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
Mac OS X version 10.5 (or newer)
Processor (CPU):
Intel Processor
CPU Speed:
1.8 GHz
Memory (RAM):
128 MB RAM
Hard Disk Space:
2 GB free disk space
In order to play The Dig on macOS with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Mac OS X version 10.5 (or newer)
Processor (CPU):
Intel Dual Core Processor
CPU Speed:
2 GHz
Memory (RAM):
1 GB RAM
Hard Disk Space:
2 GB free disk space