This game is really addictive! I could spend hours just watching that adorable frog bouncing on the bar. Visuals are good and gameplay is simple but works perfectly for its purposes. The side effects of the falling objects are a good addition to the game mechanics. I got a strange feeling when I heard some classic games' music, I guess it's nostalgia.
My only complain is tha I didn't get the way levels are chosen. It could be better to have a level selector menu or a difficulty progression system.
Great job!