In order for you to play Poltergeist: A Pixelated Horror on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
Mac OS X 10.6+
Processor (CPU):
SSE2 instruction set support.
Memory (RAM):
1 GB RAM
Graphics Card:
Shader model 2.0 capabilities
Storage:
500 MB available space
In order to play Poltergeist: A Pixelated Horror on macOS with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Mac OS X Mavericks
Processor (CPU):
SSE2 instruction set support.
Memory (RAM):
1 GB RAM
Graphics Card:
Shader model 2.0 capabilities
Storage:
500 MB available space