Castle Layout- Mahjong Expert Level-Underwater-Microsoft Mahjong This video shows you the Expert level Mahjong game from the Microsoft App, played with the Underwater, Castle Layout. Yes you are free to choose another theme if you like, no problem. Some people rather play Mahjong with numbers than with figures or the other way around. Lots of themes are available in this app, as well as different layouts. Only one reshuffle is possible! If you are interested in my Mahjong playlist, take a look at it right here