Hanafuda (Flower Card Game)
Hanafuda cards (here US) derive from the encounter of western playing cards, imported by Portuguese sailors around 1550, with the traditional games of Japanese couples (like koi awase, reuniting the shells). They were reduced in size to fit the minute Japanese hands or - according to a more credible theory - had small dimensions because the original model was a worn out Western deck and several times trimmed to the edges, to prevent the cards from recognizing the folds in the corners. The current standard format of Hanafuda cards, in addition to being smaller than the western ones are usually much thicker than western playing cards. Later this deck of cards spread also in other countries with some graphic variant, mainly in Korea and in the Hawaiian Islands .