Mahjongg: Age of Alchemy is a free online mahjong game. Click on two matching tiles to clear them from the board and earn points. You can only clear free tiles - which are at the top of the stack with either the left or right edge free. there are 5 tilesets to try and complete. If you get stuck or run out of moves on a puzzle, press the Deal new Tileset button to move onto the next level. You have 15 minutes to earn as many points as possible.