This free educational game is very challenging. In it, you have to quickly react to the incoming green or blue balls and try to get as high a score as possible. But be careful, the game also has an occasional orange ball that will try to go in your way. So you need to be on your toes and keep moving to avoid it. And if you do get hit by the orange ball, you will lose a life. So be careful and try to get a high score. 

The Nutaku app will also help you to improve your concentration and memory skills.