In order for you to play Chicago 1930 : The Prohibition on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
Mac OS X 10.3.9 or later
Processor (CPU):
G3/G4/G5 or Intel Mac @ 800 MHz or better
Memory (RAM):
256 MB RAM
Graphics Card:
32 MB VRAM graphics card
Storage:
01 GB available space