Your MotherShip is being invaded by Alien Ships and you must stop them! Load up your ship and use your missiles to stop them from attacking!Protect your Mothership and Yourself!.Use the joystick on the screen to move the ship and press shoot button to shoot missiles.Challenge your friends and make the highest score!!!!.There is an unlimited amount of waves and every wave is generated randomly so each time you play it is unique!.Collect Ship repairs and refill your ammo on the Battlefield.THE BEST THINGS IN LIFE ARE FREE!! So this is a FREE Game.!!Thanks for playing and have fun!