We invite you to play galactic ping pong and for this you must go into the game Galaxy and Stone. You will operate a large vertical platform, which is located on the left. It is not for entertainment, it is a huge screen that protects the planet from crazy asteroids. Recently, their attacks have become too frequent. There is a danger that they penetrate through the atmosphere and turn everything upside down. A large asteroid can cause the death of all life on earth. The screen is designed to repel flying stones, but they need to be controlled by moving in a vertical plane and not allowing cosmic stones to penetrate beyond it.