In order for you to play Road Redemption on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
Mac® OS X 10.7 (latest version)
Processor (CPU):
Intel® Core™ 2 Duo
Memory (RAM):
4 GB RAM
Graphics Card:
NVIDIA® GeForce® 8600M GT or ATI™ Radeon™ HD 2600 Pro
Storage:
1000 MB available space
In order to play Road Redemption on macOS with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Mac OS X 10.8 (latest version)
Processor (CPU):
Intel Core i3 or better
Memory (RAM):
8 GB RAM
Graphics Card:
NVIDIA GeForce GT 650M or ATI Radeon HD 5670 or better
Storage:
2500 MB available space