In order for you to play Heart of the Machine on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
Mac® OS X 10.9+ (64-bit)
Processor (CPU):
Intel® Core™ i5-760 (quad-core) / AMD® Phenom™ II X4 965 (quad-core)
Memory (RAM):
6 GB RAM
Graphics Card:
NVIDIA® GeForce® GTX 550 Ti (1 GB) / AMD® Radeon™ HD 7770 (1 GB)
Storage:
5 GB available space
In order to play Heart of the Machine on macOS with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Mac® OS X 10.9+ (64-bit)
Processor (CPU):
Intel® Core™ i5-4470 (quad-core) / AMD® FX-Series™ FX-4350 (quad-core)
Memory (RAM):
8 GB RAM
Graphics Card:
NVIDIA® GeForce® GTX 760 (2 GB) / AMD® Radeon™ R9 380 (2 GB)
Storage:
5 GB available space