These are troubling times. Earth’s very existence is threatened. Alien
invaders from space have been sent to destroy our planet. You have been
called up to repel their attack.
You must plan your battle strategy well and upgrade your fighter ship to
defeat the increasingly advanced aliens. Beware, their powerful
overlords are watching and will join the fight to help the alien forces
destroy us.
We’re counting on you. Earth is counting on you
