Great music and lowrez usage! Aiming/gauging 3d perspective is a little tricky (it might be worth adding a drop shadow to the cannonball to help with aiming).
Note: The game doesn’t seem to work with Chrome on MacOS, but I was able to get FireFox working. On Chrome, the game seems to be stuck on the title screen. I hear sound effects when I press arrow keys and space, but nothing new renders.