In order for you to play Salt and Sanctuary on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
Lion 10.7.5
Processor (CPU):
Intel Core 2 Duo 2.8 GHz or equivalent
Memory (RAM):
1 GB RAM
Graphics Card:
OpenGL 3.0+ support (2.1 with ARB extensions acceptable)
Storage:
2 GB available space