Mahjong is extremely popular in Vietnam and it has been part of the culture for many years. Mahjong is a tile-based game that originated in China, and it has been adapted to fit the culture and game-play preferences of the Vietnamese people. The most popular form of Mahjong is a 4-player game in which each player picks and discards tiles in an effort to complete a winning hand. Mahjong has become even more popular in recent years as it has made its way into the online world as an adaptation of the classic. Mahjong is now available to play in the online casino world as well, with many casinos offering their own version of the game.