The tiles all have different characters and images on them. When you start, the Mahjong Solitaire game appears as a board with 144 tiles arranged on top of one another in the shape of a pyramid. The Mahjong game has two different versions: the traditional Asian version, which is a game for 4 players, and Mahjong Solitaire, which is always played by one person and is mostly popular in the West, this is the game you can play online on.