I dont know what to "say"
so I continue with the pro and contra.
pro:
good idea, good music (for some minutes)
contra:
no mute button,
no pause button (i wouldnt care if the multipler starts with zero if i get back to the game, i want sometimes to pause the game, you can program it so that "P" pause the game),
only one soundtrack in every level and at the menu,
at the beginning not really a chellange plus every ball is only one point (to get a high highscore you must collect multiplers or some white balls),
the laser is a good idea but why is the laser not computer controlled so you can activate it and then the laser shoot at the "bad" balls automaticily for some minutes or seconds?,
whats with upgrades (for the laser or a passive "not so often appearing "bad" balls"-upgrade what you can upgrade or so),
the music gets boring after some time and the game, too.
i know, my english is not the best. sorry for the bad review, i hope your other games are better.