cool concept. the ckick is a little sluggish.. seems like the timing is off a bit, but it could be me... I'm always surprised where the ball is when I click, thinking it should be closer.. so I'm not too sure about the smoothness of the graphics...
the music is too compressed, mono, and WAY too short and repetitive..
sound design is not so great either, I would like to hear some better fx...
other than that, if you create some back story or other story device you could have a winner here... instead of numbers do something else that puts together some puzzle in an overall story and dress it up... would be a big hit!