In order for you to play Spacebase Startopia on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
macOS Big Sur (11.2.3)
Processor (CPU):
2.9 GHz Quad Core Intel (Macbook Pro 2017 and later)
Memory (RAM):
16 GB RAM
Graphics Card:
Dedicated GPU, e.g. Radeon Pro 560 (Macbook Pro 2017 and later)
Storage:
10 GB available space