Game looks good. Nice aesthetic, although a bit dark. Cool music.
I'm guessing your game physics are not decoupled from the framerate, you're relying on set sync rate to determine the game speed, and you're using timer() to do the level time countdown. I have a fairly slow computer, and by the time the ball stops bouncing on level 1, about 3/4 of the time has gone. In the rest of the time i can get it about an inch up the screen. Seems way slower than i imagine you would have designed it.
Also i got a "Ball.exe has experienced a problem and needs to close" upon exiting the game, but that's no big deal really.
Nice to have another Amiga veteran on the board. I never played wizball though. Perhaps i should find an emulated version.