In order for you to play Them's Fightin' Herds on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
macOS Monterey
Processor (CPU):
Dual-core CPU (2 GHz or greater speed)
Memory (RAM):
4 GB RAM
Graphics Card:
Intel Core i3 550 Integrated graphics chipset or equivalent.
Network:
Broadband Internet connection
Storage:
6 GB available space
In order to play Them's Fightin' Herds on macOS with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Latest macOS release
Processor (CPU):
Dual-core CPU (2 GHz or greater speed)
Memory (RAM):
8 GB RAM
Graphics Card:
A dedicated GPU (Nvidia or AMD) with at least 750MB of VRAM strongly recommended
Network:
Broadband Internet connection
Storage:
6 GB available space