Reflexes can be training.Since flying in from somewhere or a yellow circle will disappear before you touch.Unlike dynamic vision training, we aim to high scores on reflex by touching the ball.If you can touch just perfect circle, if you could fail is good. the game is over and it will continue to fail.Difficulty "Easy," "normal," "difficult," "very difficult" and four are available.Training can be fun to change the difficulty to match the maturity."Easy," "normal" practice because it is designed for slow moving speed of the circle.Fast speed of getting used "hard" Please challenge.