Glad you like it! The ball shouldnt be random, since its not physics based, except for the "erratic" curse is currently active, though when you hit a brick corner the deflection angle can be unexpected. The paddle can change the angle as well depending on how far away from the center you bounce the ball so youre able to get the ball where you want it to, so that may also be what youre talking about.
I agree on the description, the shortened names in the curse list are not always clear. I'll actually add a short description on the game page :)