The game is an arcade take on 3D asteroids. A large, outlying asteroid belt has been displaced by aliens, and this is passing into a solar system, causing devastation. The 'take' is from the point of view of the asteroids, and the Miners living on and among them. The player is the lone Starfleet pilot battling to protect the system and save the Miners. Each 'level' is the approach of another planet as the asteroids get further into the system, and success or failure determined by whether any asteroids get through and how the player fares against the opposing alien craft.