Not bad, for a while
It's a decent game, it has nice graphics and a real simple gameplay, and a nice curve of difficulty. My only complaint is really that igets really boring after a while. The only thing that would keep someone going would be to get achievements unlocked. There is some variation with the different bubbles and gusts of wind and such, but it all gets a bit stale. I'm not entirely sure how you could improve on this, though.