Not a deep rules game but fun. Its too bad the game code was never fully optimized because it could be an awesome game as well as fun. The air ball / hole in one shot is my favorite one in pinball and ingenious.
Update to the latest sortware version from Sterns site. Also remove the upper left orbit wire gate. It allows the ball to orbit left and right around the PF. I also disabled the post except for the "rive" and it speeds up / smooths out the game flow.