Tiân is a Chinese word for Sky, and the 24 cards in this game are in suits of Suns, Moons, Planets and Stars. The ranks of the cards in each suit are from zero to four, plus a five card that can function alone or in combination with other cards. The suits also are ranked in power, adding a further dimension to your strategy. It's essentially a trick-taking game, but once a winning card is played to the table, it can still be used once more in a future round. Interesting card powers make this game a big challenge in a small deck. Made in USA for 2 players age 8+.