The Pinball Arcade "physics" are terrible, terrible, terrible and get worse as more balls come into play. How many times do you see the exact same shot do the exact same thing with perfect predictability. It's sad that they have such an awesome set of artwork but can't add a pinball game to the graphics. It's also sad that they have to kickstart some games as I watch Zen Pinball crank out license after license. It's also sad Stern didn't go with Zen or Pro Pinball to make their games. But, then again, they are our only (iOS) choice for these games and we can just say we buy them to learn the rules (that's my excuse and I'm sticking to it).
It needs a complete engine remake.