In order for you to play A Night at the Watermill on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
10.10+
Processor (CPU):
2.0 Ghz 64-bit Intel-compatible (Apple silicon supported through Rosetta 2)
Memory (RAM):
4 GB RAM
Graphics Card:
OpenGL 3.0
Storage:
750 MB available space