Having good reflexes in some situations can save your life, so they should be trained, all the more it is quite real and even fun if you use the Dangerous Circle game as a workout. The task is to draw the ball in a circle, preventing it from breaking and collecting all the diamonds. As soon as the ball starts moving, the circle begins to bristle with sharp long spikes. It is necessary to change direction and run along the outer or inner circle to avoid spikes. An instant reaction will be required, and the speed will increase.