We had planned to lay out candy bars on the tile chessboard outside of the Zeum. Each bar pointed in a certain direction, and each bar's name contained or suggested a number (U-NO, Doublemint, 3 Musketeers, 5th Avenue, After Eight.) You could advance almost all the way to the tile marked "finish" using these directions and numbers, but one bar was missing and had to be added in: a 5th Avenue, which was the answer.