A mix of 5 different Mahjong games: Mahjong Solitaire, Mahjong Connect, Triple Mahjong, Mahjong Slide and 10 Mahjong. Combine 2 of the same mahjong stones to remove them from the playing field. You can only use free stones. A free stone is not covered by another stone and at least 1 side (left of right) is open.