Daruma otoshi toy (daruma Otoshi - だるま落とし)

Daruma otoshi is a traditional Japanese game of skill made of a pile of circular wooden blocks with on top the head of Daruma, a famous Zen monk. The aim of the game is to remove the bottom block with a wooden hammer leaving the remaining pile in place. The game ends when all the blocks have been removed that way or if the pile tumbles down.