Kerplunk

A very futuristic game indeed with no similarities whatsoever to the popular (and copyrighted) board game. Here, a number of sticks had to be pulled from a cage and threaded through a tube. Three sticks collectively were long enough to nudge the crystal free. The cage, through which the sticks were impailed, was filled with tennis balls. If four tennis balls were dropped they would block the crystal's path and render it unattainable.