Dragon Castle is a game inspired by Mahjong Solitaire. During your turn, you take a pair of identical tiles from the central "castle" (known as the Dragon Castle) and play them on your own realm board to build your own castle. From time to time, you might sacrifice these tiles to gain shrines in their place.

Every time you make a set of tiles of the same kind, you "consolidate" them, i.e. flip them face down to earn points. When you consolidate a set, you can also build shrines on top of the consolidated tiles: Shrines let you earn more points, but they also limit your building options. You might also take advantage of the available spirit card and its game-changing powers...but this comes at a cost! Lastly, don't forget to check the dragon card in play, and to follow the building requirements to score bonus points.

When the Dragon Castle has been reduced to only one floor, the game ends. After one final round, the player with the majority of points is the lord of the new Dragon Castle…and the winner of the game!