If you are looking for some challenge that will test your mind and skills, this game will make you do that while having lots of fun.
When the player touched and holds, the color of the ball starts changing. Player should release at his/her desired color. If the color of the ball and the brick is the same, player is successful. But there is a trick to this mechanics : While holding or tapping, the ball also moves according to where your finger is. So you need to calculate both color and the position of the ball. And also while holding, the time slows down to give player a chance to calculate the next move.
Good luck!