macOS game controls include support for keyboard, mouse, trackpad, trackball and even works with arcade spinners using the x Axis. 

For external keyboard usage, use the left and right arrow keys, or 'A' key for left and 'D' key for right. Use the Spacebar to toggle play and pause! To made window size slightly larger or smaller use the up and down arrow keys, or 'W' and 'S'.

If using macOS 10.15, please make sure the game resides in your Applications folder. This is require in order for Catalina to load the game's fonts.

As the commander of the Space-Bar, you defend the red zone while volleying various colored pucks or space-balls while knocking out the menacing bricks above. The game has 100 exciting levels total including 20 fun or extra challenging bonus rounds. These bonus rounds occur every 5 levels. There are three types of bonus, a free tennis ball, a fire ball blaster, and lava ball level mode.

By default the tennis ball is green and the lava ball is red. If you choose a different colored ball for your main ball, these colors may vary. Each bonus level has one or more opportunities to earn extra lives. You start the game with 3 lives and can earn up to 5 lives during the game. Levels 1 and 2 are unlocked, you earn extra levels in the game by completing the next level.