First place the different sizes of ships in your fleet on the grid and then let the battle begin! Choose the exact quadrant on the grid that you're guessing that an enemy ship is located and shoot it. If you're correct you will lead your fleet to the victory! But your opponent is making the same guessing about the position of your fleet in the grid so it's a matter of who is going to discover the enemy ships faster that the other. You get to choose among 2 modes, the Classic where you guess the position of your enemy's ships and the Advanced where you collect points that you use them to buy power-ups.