Asteroids, as if conspired and all went straight to Earth overnight to grind it into powder. But the earthlings foresaw such a turn of events and designed a special defender starship in advance. It has long been launched into orbit to patrol space borders. Until now, there was no need for it, but soon one asteroid appeared, followed by another, a third and then a whole bunch. Some are almost terrestrial in size, and this is a real threat. Shoot at space cobblestones, trying to scatter them to dust and prevent them from falling on our planet in Game Planet Protector. The life of all people depends only on you.