It seems this was used as a game for adults. Apparently, it was used for playing games at drinking parties?? Despite their small size, they are perfectly and meticulously crafted. Size (external measurements): Large: 8.5 cm square, height 5.5 cm Medium: 6 cm square, height 4.3 cm Small: 4.5 cm square, height 2.5 cm Dice: 1.2 cm square