Original FG Mah Jongg is a traditional chinese board game. It's your task to remove as many stones as possible within 5 minutes. To remove stones you must click on two identic stones and both of them must have one long free side.
Use the mouse and click to remove the stones.
A context menu should be shown when right-clicking or, on touch devices, long-pressing in the game. This menu especially allows to play in full screen and control the volume.