From the manufacturer: Double Shutter Junior doubles the family fun. Roll the dice and add up the dots to shut the tiles of your choice. The tile total must match the dot total in any combination you want. This fun family game helps develop math skills while being fast to learn and easy to play. Double Shutter Junior comes with a double shutter box that has two rows of 6 tiles each, rather than the 9 that the original version comes with. Includes two dice. Ages 6 and up