Shoot down planes as you avoid being shot yourself. Use the A and D keys to move your tank from right to left, and click the left mouse button to fire. Hold down for rapid fire, or press Spacebar for auto fire, where your gun scans the sky and shoots at regular intervals. Press W to shoot rockets, which you only have 20 of in a level. Fill up the "Task" bar to finish the level. You can upgrade your tank after each of the five levels. Your accuracy and number of kills will determine how much money you earn.