Mahjong Slide is nice tweak for an online mahjong game. Similar to mahjong solitaire, it uses a mahjong set of pieces which are arranged in different formations. Then the difference comes: you have to slide pieces and to bring them close to their identical pairs. When a piece is slid it moves in the direction where it was slid until it reaches an obstacle. That obstacle can be another pieces or the margins of the board. If 2 pieces become adjacent they are removed. The goal of the game is to remove all the mahjong tiles from the board.