Japanese playing cards, known as Hanafuda, are traditional cards that originated in Japan in the 16th century. Each deck consists of 48 cards divided into 12 suits, representing the months of the year, with each suit featuring a unique flower. The cards are used in various games, with Koi-Koi being one of the most popular. Hanafuda cards are typically made from thick paper or plastic and are characterized by their vibrant colors and intricate designs. Unlike Western playing cards, they do not have numbers or suits like hearts or spades, making them distinct in both appearance and gameplay.