From Dos write : prince makinit

while playing: Shift+t   All the lives you want
               Shift+i   Invert Screen
               Shift+w   Fly mode
               Shift+b   Black screen
               Shift+k   Suicide
               Alt+n     You pass to the next level
               Alt+A     Restart the level
               k         Kills all enemies in the screen
               + or -    Add or remove minutes of your time