mahjong 500Mahjong Titans. The orinal challenging version is back! If you would prefer to play the easier version that was featured here recently you can still find that by clicking this link: MahjongMahjong Dimensions - more time: Play a 3D Mahjong game (Mahjongg Dimensions). Combine 2 of the same stones to remove them from the board. Stones need to have at least 2 (adjacent)