Rattle, Crank, Click-Clank, Pling! Sit at the numerous levers and switches of the crazy Gum Gum Machine and produce the most valuable stuff in the world Ã¢ÂÂ the fantastic Gum-Gum! But beware: your professors are strict and only the best Gum-Gums make it through their quality control. Which one of you produces the best Gum-Gum. An exciting game of puzzle luck and variable layout.