Excellent gameplay, really, really nice audio, and with options to toggle? You spoil us! There were some instances where intentionally or unintentionally I could get objects to share the same space, and somewhere around the level 7-10, when the frog eats the fly, the fly would resist and not move and it wouldn't trigger the level completion. Thankfully for the reset button, I was able to finish the whole game!
Wonderful stuff, keep it up!