Thank you very much for your comments!
I modified the game considering your comments, even the one of the mute button, notorious, because it is true that it wasn't intuivive ;). You can also grab the ball back, because it is true that it can be annoying if you miss it.
Now, the user cannot "cheat" the way IndieFlashArcade described. Blame him, not me! ^^
 "Bubble Escape"){kind=icon}