On one of the planets where there is a small colony of earthlings flew a squadron of alien ships. After examining the location of the base of earthlings, they attacked her. You in the game Alien Invasion will have to repel their attack and try to destroy the enemy as soon as possible. To do this, you will use a special weapon capable of a single shot to destroy the enemy ship. You will need to aim at a flying alien ship and firing a projectile to get into it. For the downed aircraft will give you points.