In order for you to play PAC-MAN 256 on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
OSX 10.6+
Processor (CPU):
Intel i3+
Memory (RAM):
1 GB RAM
Graphics Card:
Nvidia 8800, Radeon HD35xx, Intel HD 4000+
Storage:
100 MB available space
In order to play PAC-MAN 256 on macOS with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
OSX 10.6+
Processor (CPU):
Intel i5 or equivalent
Memory (RAM):
2 GB RAM
Graphics Card:
NVidia 560+ or equivalent
Storage:
100 MB available space