In order for you to play Fistful of Frags on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
MacOS X 10.7.x (64bit not supported!)
Memory (RAM):
1 GB RAM
Graphics Card:
NVIDIA GeForce 8 or higher, ATI X1600 or higher, or Intel HD 3000 or higher
Network:
Broadband Internet connection
Storage:
4 GB available space
In order to play Fistful of Frags on macOS with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
MacOS X 10.9.2 or higher
Processor (CPU):
Dual core Intel processor, 2GHz or better
Memory (RAM):
2 GB RAM
Network:
Broadband Internet connection
Storage:
4 GB available space