The music from Star Wars proclaims this to be a space battle: but it's a contest with a difference.
Your spinning green fighter craft needs continuous monitoring to prevent it bouncing aimlessly around the screen, and (if selected from the menu) on to the jagged rocks too. The joystick controls not only direction but also velocity and I found constant adjustments to be necessary. From two to four whirling red aliens will engage you, plus one rotating purple saucer, according to difficult level. Laser bolts may be normal or ricochet; so in all there are several options o fplay. Collisions between enemy ships can be arranged, adding cascades of white debris to the screen.
Overall, the graphics and sound effects are adequate but not stunning. Enjoyable game, though.