Cross Platform, eh? You do realize that Shockwave doesn't run on Macs natively right? I'm left to assume it runs on Windows and Linux because I'm not going to be playing it.
I love breakout clones so much, and with a few fixes, this would be great. First, the ball bounces off of a wall that's outside the viewable area, which is weird. Second, I don't like the paddle moving as it's hit. Third, the ball hitting two bricks at once doesn't always seem to produce two bonus bullet things. Last, the bonus bullet spawns from the ball on the last brick of every level. Fix that, and I'll definitely favorite it.