Mahjong is one of the most recognised games in the world. Originally from Asia, like Sudoku, and similar to Money Memo, the aim of the game is to find matching tiles, remove them from the game and build the biggest pile for yourself. In doing so however, you may only take matching tiles which are free on their left or right sides. The game is played until there are no more free tiles to remove.
With Mahjong you must, similar to other logic games, always think a couple of moves ahead, to avoid playing the wrong move. Mahjong is so well known that it is often included in computer operating systems, to be played offline. Almost everyone has played this game or seen it played at parties etc. more commonly today probably on their computer. In Asia it is possible to buy handmade Mahjong sets that run to thousands of Euros!