Mahjong is a traditional Chinese game that involves skills, strategy and calculation, as well as a little luck. The goal is to complete as much levels as possible until you are out of possible moves, at that point the game ends. Playing field consists of tiles, positioned on different levels. To make a move you click one of the free tiles and then click on the same tile somewhere else on the field that is also free. Those tiles are then removed from the field and other tiles may become available, i.e. freed from being blocked by other tiles from left or right sides. There are some cases when tiles can be paired even if they are not identical, those belonging to certain groups, i.e. flowers, seasons. If you can not find tiles to pair by yourself, you can ask the game to give you a hint. But you have to be really stuck to ask for help, don't give up!