Castle Mahjong is a mahjong game based on medieval times. On top of being a mahjong game, this online game also lets you build! Look to the lower-right hand column and you will see the amounts of wood, stone, and brick needed to finish your building. Each level is made of 5 sections that allow you to collect the material needed. Each game is timed so while you are looking for the stones, you do have to mine the timer in the right-hand column. If you get stuck, you can use a hint and/or shuffle but you will lose points to your score. There are 10 levels which means 50 games of mahjong for you to play! Each session has its own pattern and challenge for you to overcome. You can match pieces of armor, weapons, and of course the building material needed for your building. Click on High Scores to see where you rank against other mahjong players!