琉球王国トランプから、英語バージョンが出ました！ Introducing important figures of the Ryukyu Kingdom. Ryukyu Kingdom Cards feature important figures of those who appeared in the Sanzan Period, the First Sho Dynasty, and the Second Sho Dynasty. The genealogy chart of the Ryukyu Kingdom together with the introduction of historical figures can help you explore the long history of the Ryukyu Kingdom. Hopefully by using these cards you will become interested in the Ryukyu Kingdom. On the reverse side of the cards, the 26 Sho kings are introduced.