Fun twist on the classic
Definately an original take on it, it's REALLY addictive to play even for a bit of an "on rails" version of the game
A few things that could push this up a notch:
-A little less blur, if you have a color deficiency, you can't even spot the balls :S
-Cursor icon, I tend to fling my cursor off of the screen since I can't see it, it would be nice to know where I have my cursor so I don't lose points from the mouse leaving the window
-A fourth difficulty :P
-Make the projectile paddle move a little faster, I find it constantly flinging balls back at me because it moves slower than the new balls that spawn
-Some randomization instead of on-rails ball spawns?