How to play Star Command on Mac

The game plays in a distant future. Earth is a distant memory, having been destroyed long ago. The small human population is concentrated in a small portion of the galaxy, called "The Triangle" due to its form, and threatened from its neighbors: The Alpha border is plagued by pirates, recently united under a certain "Blackbeard", the Beta border is frequently ambushed by an intelligent insect-like alien race who is thought to plan an all-out war. The third border leads to largely unknown territory with space-faring robots of unclear origin. The only hope for mankind is the Star Command, the headquarter of military forces. You control a spaceship crew, trying to secure peace by completing missions issued by Star Command.