Press P to pause game play, then enter one of
the following codes to activate the corresponding cheat function.
Note: This may require v1.4.1 or later.

Code
Multiple balls multishoot
Mega shoot megashoot
Smaller paddle shrinkpaddle
Bigger paddle expandpaddle
One ball settoonestrike
Fire ball fireball
Wall thewall
No monsters removemonsters
No bad bonuses removebadbonues
More balls addballs
Trainer: +2 v1.3 by PERiOD
Trainer: +2 v1.42 by PERiOD