The concept is fun in itself, but the game assets could benefit from some other sort of hitbox, as hitting a box that is too close to a duck's (assumedly square) hitbox will still kill the ducks despite the shot not hitting the duck itself. Also, at times, a box will fall right under a duck, which means you'll always hit both. Aside from that, I don't really understand how the Jam's 'growing' theme is implemented...