Challenge Dice is a toy Nintendo released in 1969 for 400 yen. It's unclear whether or not the Challenge Dice is an original product by Nintendo or if it was licensed to them since several identical toys have been found in Europe under the name of Chaotic Cube. Three different colors of the Challenge Dice have been produced including green, red and white. Each Challenge Dice came equipped with cylinders of different sizes. The goal of the Challenge Dice was to find a way to get every single one of the cylinders inside the dice by sliding them through the holes on the cube.