This game is similar to Tic Tac Toe in which you and your opponent take turns to mark a grid with your symbol, and the one whose symbols form a certain pattern wins. In Tic Tac Toe you need to form a straight line with your marks, and in this game you need to form the four corners of a square. The size of the grid is also different. In Tic Tac Toe the grid is a 3 x 3 area, while in this game the grid is a 4 x 4 area. The square you mark can be of any size, and may be tilted also. Make sure that you spot all the possible squares inside the grid. You and your opponent play a total of 10 rounds, the better your result, the higher your score.