As X's, your goal is to get three in a row before your opponent (O's) does. Click anywhere on the grid to place an X in that square on your turn. Try to achieve four in a row on the 5x5 grid for an added challenge. If you want to make the game even more difficult, you can switch to hard mode. You can play against a computer or with a friend on the same computer. Tips and Tricks: 1. Control the corners, as most players focus on the middle space. The corners can be used to set up multiple winning moves at once, leaving your opponent no way to block your win. 2. Keep an eye on your opponent's moves and block their potential winning spots. 3. On the bigger grid, it is best to control the center. Since there are five squares in each row and column, putting your X's in three adjacent spots will give you two possible winning moves, leaving your opponent trapped.