Remarkable:
There's really one way to say this, this is REALLY cool. Out of all the games I've seen, this is by far the most unique and fun. Everything is done really well, the levels, the cannon, the speed and power behind the cannonballs. It was really easy to just. Keep reseting to play over and over again. The cannon is beautifully designed!
Needs Improvement:
I don't know much of a solution, but sometimes the ball wouldn't make solid contact when aiming for the edges of the cubes and would look as if it made contact but couldn't move them. It might have just been a visual glitch though.
Successful:
Again, it's just really good. Everything that it looks like you attempted to do is accomplished really well. The game is really fun to play and almost never do you feel cheated by the physics of the game. The effort you put into this really show.
General:
It's pretty hard for me to knock this game at all, it really does work well. It's fun, it's unique, but above all it shows how hard this project was worked on and that's part of what makes me enjoy it so much. Fantastic job Mark, this is awesome. Plain and simple.