In this free shooting game you have a special job to do. With your space craft you have to shoot down some spheres. All spheres are red and marked with numbers. Your job is to shoot them in exact numerical order from 1 to 10. Each sphere you hit will change its color to blue. But if you shoot the wrong number then that one will explode and occur somewhere else. That would not be a problem if you wouldn't have only 2 minutes to finish the task. Sphere destroyer is great free space shooting game that will push your skills and concentration to the limits.