Mahjong (Traditional Chinese: 麻將; Simplified Chinese: 麻将; Pinyin: májiàng; Cantonese: màhjeung; or Chinese: 麻雀; Pinyin: máquè; Cantonese: màhjeuk; other common English spellings include mahjongg, majiang, and hyphenated forms such as mah-jong or mah-jongg) is a game for four players that originated in China. It is a game of skill, intelligence, calculation and luck. Depending on the variation which is played, the amount of luck may vary from 20 to 80 percent. In China, Taiwan, Hong Kong, Japan, and other countries mahjong is often used for gambling. The Chinese word 麻将 literally means "hemp general". In Cantonese an alternate writing, 麻雀, is more common (the same kanji are used in Japanese). In Cantonese this literally means "sparrow", while in Japanese it means "hemp sparrow", and is pronounced mā-jan.
In English, in addition to Mahjong, the name of the game is variously written as Mah Jong, Mahjongg, Majong or simply "M-J"; there are other, less common variations as well. The spelling "Mah-Jongg" was trademarked by Joseph Park Babcock in 1920.
The closest Western analogue is probably the card game gin rummy. Both games involve selecting or discarding units (tiles in one case, cards in the other) to score points by forming groups or runs of similar units.
Read more at Wikipedia.org