The game consists in a board of 9 by 9 squares on which three balls of seven possible colors are placed at each turn. Every turn you make your move by tapping a ball and the empty square you want to move it to. When five or more balls of the same color are on the same horizontal, vertical or diagonal line, next to each other, they will be removed from the board and the score will be increased with the number of balls you have "terminated". In this case the feared three new balls will be postponed until the next turn.