Thunderclap Warfare

Alien monsters intensified and is currently trying to attack your planet. Homeland defense is not so simple, does not apply to aliens space weapons, because it is hopelessly out of date. For that it operates intelligent robot, developed in one of the research laboratories and can be used to protect the Earth. Immediately go to the galactic expanses and enter the flying robot to date. It is also equipped with the latest weaponry, which you can try to use in battle.