You can play this game inside this web page, or you can click here to play the game as a standalone web application. Both are ad free.
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Combine 2 of the same mahjong stones to remove them from the playing field. You only can use free stones. A free stone is not covered by another stone and at least 1 side (left or right) is open. You can combine any flower tile with another, the same applies to the season tiles.