Good arcade fun. Is there a way of choosing what direction your projectiles fire in? I might be missing something but had to sort of adapt to where they wanted to go. That might be the point of it though and did enjoy it if so! Also, the bouncing of the walls is a fun touch and actually the toughest thing to manage. I was going to say that it was too strong a bounce but then if you changed it you might lose that part of the challenge.