Riichi Mahjong*

Riichi Mahjong is a specific Japanese version of traditional Chinese Mahjong, distinct yet similar. Originating from the early 20th century, the game has gained worldwide recognition and has official tournament rules established by Mahjong associations.

Key differences include the minimum requirement of one Yaku to win a hand, the introduction of Dora as a bonus tile, and the Riichi mechanic that allows players to place a bet when one tile away from winning. The scoring system is more complex, relying on combinations and multipliers to determine the final score. Other minor variations exist, though they aren't as significant.