In order for you to play Halcyon 6: Starbase Commander on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
Mac OS X
Memory (RAM):
2 GB RAM
Storage:
400 MB available space
Recommended System Requirements (macOS)
In order to play Halcyon 6: Starbase Commander on macOS with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System: OSX 10.9.5 (Mavericks). Processor (CPU): Intel dual-core processor running at 2.4 GHz (Intel Core i3 2nd gen or newer architectures are recommended). Memory (RAM): 4096 MB RAM Graphics Card: Intel integrated graphics card HD4000 or above. With at least 768MB of dedicated VRAM and with at least Shader Model 4.0 support. Storage: 1 GB available space Sound Card: Integrated
Operating System: MAC OS 10.6.7 to 10.12 Processor (CPU): Intel Core Duo Processor (2GHz or better) Memory (RAM): 2GB Graphics Card: ATI Radeon 2400 or higher / NVIDIA 8600M or higher / Intel HD Graphics 3000 Hard Drive: 2GB