Mah Jong is a tile-matching game that offers a high degree of customized play. The player's goal is to remove layered tiles from a background and achieve the best possible time.
The game doesn't merely offer traditional Chinese Mahjong tilesets and other options. Instead, it gives the player a lot of different ways they can play. For starters, they make initial selections on the main screen. The game offers more than 50 pattern boards that can take the player to a puzzle immediately. If the player makes selections below this area, they can customize what appears when they choose a board or allow the game to randomly select a pattern.
In the Board Generator area, they can pick a puzzle that has at least one solve possibility (Solvable) or one that is possibly unsolvable (Random). In the lower-right area, they can choose one of three modes (Easy, Standard or Expert). The Easy and Standard modes allow the player to undo moves and use hints.
On the play screen, Mah Jong provides even greater customization via a green gear icon in the lower-right corner. The player can modify the language, background, theme, tileset art and tiles.