Guard Ball

In this wonderful game you will have no ordinary job. A little funny yellow smiley flies across the screen. He pushed on the blue rectangle that is positioned vertically and stands on the left side of the screen. If you try to press the hotkey on your keyboard "forward", "back", "left" and "right", you will see this as a blue rectangle changes its location. Your goal - to prevent the smiley leave the imaginary square. Be very nimble to keep the smile.