Combine 2 of the same halloween mahjong tiles to remove them from the board. You only can use free tiles. A free tile is not covered by another stone and at least 1 side (left or right) is open.You have 15 levels to challenge in this mahjong games. The first 9 levels shapes are “H A L L O W E E N”, and the last 6 levels shapes are random. You can play this mahjong game as many times as you like (with different challenge).