In order for you to play BlazeRush on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
Snow Leopard (10.7.X)
Processor (CPU):
2.0 GHz Intel
Graphics Card:
512 MB NVidia / AMD Radeon / Intel HD 3000, HD 4000
In order to play BlazeRush on macOS with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Snow Leopard (10.8.X)
Processor (CPU):
2.0 GHz Intel
Graphics Card:
1 GB NVidia GeForce 650 / AMD Radeon HD 5750 / Intel HD 4000 and newer