In order for you to play Tyranny on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
OSX 10.10
Processor (CPU):
Intel Core i5 @ 2.9 GHz
Memory (RAM):
6 GB RAM
Graphics Card:
Radeon HD 6950m with 1GB VRAM
Storage:
15 GB available space
In order to play Tyranny on macOS with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
OSX 10.11
Processor (CPU):
Intel Core i5 @ 2.9 GHz
Memory (RAM):
8 GB RAM
Graphics Card:
AMD R9 390m or NVIDIA GeForce GTX 750m
Storage:
15 GB available space