Detailed description of the Bubble space

Action game A meteor is approaching the earth, the world is on red alert. Scientists have detected a strange behavior. Soon discover that it is not a simple meteorite, but a kind of factory to produce attack ships. These meteorites are assembled. The world trusts you to go destroying them little by little until they disappear. According to the size they produce ships of higher quality.We trust you, become a legend.Luck...3 game modes each a new game experience.