In the Octum game, you can check your reaction speed and mindfulness. Doing it you will all be quite a simple way. Before you on the screen will be seen a ball. From all sides in your character will fly multi-colored balls. All of them will move at different angles and speeds. When it comes into contact with your ball, it will destroy it. You will have to absorb them with force lines. To do this, just twist them in space and substitute a line of color that is defined by color under the same color as the ball.