Ruby slippers is not a BB1 game. The game was originally a BB1.5 game, which means it was a bb1 cabinet with a bb2 mpu. So the cheapest way to get it going is to buy a bb1 with bb2 mpu inside of it. You will need a top lcd screen mounted in the top box, but you do not need the tsetse board for the top video, it is provided by the bb2 mpu. When you setup the game, after it loads and gives you the top box lost comm error, you will need to go into the setup screen again, select the game setup option, scroll down and look for the disable top box option and check that.