Try out this game. It is jumping based game which requires you to concentrate and have a fast reaction! Don't want to spoil the game so why don't you download the app and find out more about the game! It's not as easy as it seems!
https://play.google.com/store/apps/details?id=com.nebularstudios.orbidots&hl=en_GB
https://play.google.com/store/apps/details?id=com.nebularstudios.orbidots&hl=en_GB