Confine Ball - rectangle box

This game's goal is confine ball in the rectangle box. There is a rectangle box in the center. Bottom is open. Right before ball goes out, touch any where on the screen and rectangle bottom will be closed. If touch any where on the screen, rectangle will be temporarily opened and closed soon. So right before ball goes out, touch any where on the screen. Test your speed ability with this game. Compare your score with other's in global leaderboard.