THE LATEST OPTION FOR THE MUTHA.PCB WILL BE THIS FREE-PLAY SWITCH (AND BRACKET) THAT MOUNTS ON TOP OF THE START BUTTON IN ANY BALLY COIN DOOR. THE ADVANTAGE OF THIS ADD-ON SWITCH IS THAT IT DOESN'T INTERFERE WITH ANY PART OF THE GAMES OPERATION AND DOESN'T DELETE ANY OF THE GAMES FEATURES. IT'S FUNCTION IS SIMPLE: PRESS THE START BUTTON AT THE BEGINNING OF A GAME AND THE FREE-PLAY SWITCH ADDS ONE GAME FOR EACH ONE REMOVED.