This is a fairly ordinary Asteroids/Invader game, though the movement of the spaceship is interesting. Moving the joystick (or using the relevant keys) leaves your ship fixed in the centre bottom of the TV screen; but approaching objects move, just as if you are looking out of a porthole.

Your objective is to avoid approaching meteors by steering away and/or blasting them with your laser. You lose shield energy every time you are hit until eventually you are destroyed. The presence of UFOs and tanker ships adds some interest to an otherwise fairly simple game. Graphics are just about adequate, but the sense of movement is poor as the star background is fixed; and the potential for interesting 3D effects has not been exploited.