you're in a restaurant. you must find a pair of each meal of a very special way. A mahjong. The instructions to find within the game. Very funny.
Looking for pairs. You can only select it if it has no piece left or right. enjoy! But all the instructions to find within the game.
A context menu should be shown when right-clicking or, on touch devices, long-pressing in the game. This menu especially allows to play in full screen and control the volume.