In order for you to play The Bureau: XCOM Declassified on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
Mac OS X Mountain Lion 10.7.5 or higher
Processor (CPU):
Intel Core i series processor
Memory (RAM):
4 GB RAM
Graphics Card:
AMD HD4870 / NVIDIA 8800GT / Intel Iris Graphics or better
Storage:
15 GB available space
In order to play The Bureau: XCOM Declassified on macOS with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Mac OS X Lion 10.9 or higher
Processor (CPU):
Intel Core i series processor
Memory (RAM):
4 GB RAM
Graphics Card:
AMD HD5870 / Nvidia 650M or better
Storage:
15 GB available space