Not to be confused with the Ravensburger game of the same name this one is named as a cross between BINGO and Dominoes.The tiles are square and have a number on all 4 sides. Players draw a tile and place it in their 5X5 tray. All sides must match. The first player to place 5 in a straight line wins. Included in the box are rules for a few other variations. - BoardGameGeek