In order for you to play Riddle of the Sphinx The Awakening on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
Mojave 10.14.4+
Processor (CPU):
2.4GHz dual-core Intel Core i5 processor
Memory (RAM):
8 GB RAM
Graphics Card:
Intel Iris 1536 MB
Storage:
6 GB available space
Sound Card:
Standard