This thing is getting better and better. I have played about 10 games with 1.63 update and it feels good. There are subtle improvements in sounds and lighting on a machine that is already very good. Listen and see when extra ball lights up. Watch the lights go balistic when you fire the cannon and get a hit. Shoot the lit target from cannon on For Those About to Rock and one arrow light goes a pinky colour and moves around the playfield (like on Golden Arrow) for added bonus.
I am hooked on this thing as I am still discovering new scoring possibilities and levels yet to be discovered.
I think my wife is going to kill me before I get a chance to learn everything.