Your objective in this addicting shooting game is defend your base from the invading aliens. Take charge of the Twin Botz and unleash a fury of bullets on the attacking aliens. Use your cities primary defense turrets to fire their main cannons to get you out of tight spots. Use YOUR MOUSE to aim and shoot. To control Left Robo use "Q" KEY to move up, "A" KEY to move down and "Z" KEY to level up. To control Right Robo use "W" KEY to move up, "S" KEY to move down and "X" KEY to level up. Have fun!