Aliens has come to occupy our planet. And of course our object is defeat all of them. Although you can see the game controls from the "HELP" menu I want to tell about that controls. You can use "+" and "-" to zoom in or out. Use "UP" arrow key to move forward and "DOWN" arrow key to reverse. You can press "DOWN" twice to slam ground. Moreover you can use "RIGHT" and "LEFT" arrow to rotate your truck. Finally you cn boost vertical with "CTRL" key. Use the mouse and click left to shoot. You can see the aim with the cursor of the mouse- a red cycle.