This new spacecraft. which is directly in front of your eyes, you need to experience in his native conditions for him. You, as the main test cosmonaut, sit behind the flight control panel and go to outer space. Flew at a frenzied speed, you get into the atmosphere of the planet Zelda and see before you the unfolding star war. In Alien Invasion you have to get involved in combat battles, otherwise you can not bypass the shooting space objects. Press the trigger as many times as the situation requires. Once the enemy ships are destroyed, continue on your way.