You are involved in a fierce struggle against evil forces from across the galaxy. Dive into the heart of the battle and fight intense battles, you must shoot down your enemies while dodging their fire. From your plane, aim and fire your cannon at the enemies to destroy them. Beware of their projectiles, none of them should be able to hit you. You will find crates that will allow you to get new weapons such as lasers or guided missiles. Resist this invasion and decimate the powerful bosses, your survival is at stake as well as that of the Earth's population. What will be your best score? Enjoy!