Player is in a role as hired space pilot and must defend trading space post orbiting planet Titan Prime in Alpha Centaury star system. All routes for merchants must be cleared of space pirates and outlaw mercenaries.

But even grater threat are waste asteroid fields in this system. Over time, player gains new ships along with better armament. Game play consist of several levels with different missions. Each level features some enemy ships and asteroid fields.

Levels are not time limited but are finished when all enemies are eliminated or player's ship destroyed.