In order for you to play Reigns: Her Majesty on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
Mac OS X 10.9 or later
Processor (CPU):
Intel Core2 Duo T5600 (2 * 1830)
Memory (RAM):
1 GB RAM
Graphics Card:
GeForce Go 7600 (128 MB)
Storage:
150 MB available space