I finished the game, but I didn't actually know that I did. I thought the game crashed because the dialogue seemed to stop mid sentence. I would suggest adding some thing to make sure the player knows the game is finished. I had to play through it a second time to figure out that it was actually the end. Besides that, the physics engine seems to be very simple with no acceleration or slowing down (if there is some it must be almost non-existent) I think that agrees with the simple happy tone of the game though. Was a quick but fun one! :)