The Arecibo message was a radio message that was beamed into space at a ceremony to mark the remodeling of the Arecibo radio telescope in 1974. It was aimed at the globular star cluster M13 over 25,000 light years away.
The message was received by the Charonians a race of aliens spent on conquest. You are just one soldier amongst many fighting the alien invasion and defending earth cities.
In this game you'll want to blast everything you see. Don't let the invaders land as they will kill off your population. Mining ships suck the resources from your planet.
Both population and resources are required to make missles. Missles are capable of locking onto targets automatically and following them! Protect each city along the way. Enjoy!
Note: Some ships are harder to kill (require more than one shot)
Some ships will make it more difficult for you to "lock on" to them by moving away from your crosshairs.
Missles that lock on target, even if it moves.
Missles that are smart, fire a few extra and they find a new target.