Type bmax at the full screen when the game firsts starts up.

This will work on Windows XP, but not on Windows NT 4.0.
When the above code says "full screen", it does not mean the full 
screen when the game starts up. Press [F4] to enter the full screen
game mode and the code will work. 
The extra balls will appear from the yellow wormhole.
Enabling this code will disable high scores from being recorded.