You use either the arrow keys or a joystick to control a paddle at the bottom of the screen to block a ball from falling off the bottom of the screen. When the ball hits the paddle it bounces back up toward the top of the screen. Spread out across the screen are various blocks, rewards and manipulators. Each time the ball hits one of these items an action occurs.

The object of is to destroy the enemies while trying to avoid their attacks, which consist of bullets and bombs. One of the enemies is also capable of laying an egg which will hatch into another enemy if not destroyed. You also get points for destroying different enemies.