Jorian Doornenbal from the Netherlands recently build his GBC 27 Pinball Madness Machine in full glory.
This classic keeps you busy as you have an active play during the operation of the GBC. You can flip like a real pinball machine or shoot GBC Balls out so they go back to the top.
A clever mechanism on the left side travels the GBC Balls up via a step/stair mechanism. Do you notice the weird part we used as steps? Yes, those were available in high quantity in this set (LEGO 42076 Hovercraft set).
At the end Jorian even uses our GBC Glow Balls to really get into the mood. How cool!