In order for you to play Chumini: Tiny Army on macOS with minimal graphics settings, your computer must meet the following requirements
Processor (CPU):
Intel Core i5 (dual-core, 2.7 GHz or better)
Memory (RAM):
8 GB RAM
Graphics Card:
Intel Iris Plus / AMD Radeon Pro 555
In order to play Chumini: Tiny Army on macOS with maximum graphics settings, you need a computer with a configuration no worse than the following
Processor (CPU):
Intel Core i7 (quad-core, 3.0 GHz or better)
Memory (RAM):
8 GB RAM
Graphics Card:
AMD Radeon Pro 560 / 570 or better