Within mystic mahjong adventures you can match stones with the exact same icon by clicking on them.
Make sure the stones have the exact same icons.
Stones that are covered by other stones can not be matched.
Two stones can only be matched if they are not being covered on either their left or right side.
You collect diamonds for each stone with a diamond icon you match. Collect 6 diamonds to finish this level.
On the left of your screen you can find bonus tiles.
These can be matched with available tiles and help you when you’re stuck within the tower.