Space Shooting

Green men attacked the Earth, their task - to destroy all life, and populate the space of their own kind. This approach earthlings are not satisfied, they are ready to fight, and the entire military arsenal was put up against the aliens. You fly as part of a squadron and should cover the offensive by land. Help your comrades -in-arms to defeat the alien invaders, it is expected to hot war. Do not miss the moment to renew and improve the weapons and defenses.