Try to collect as many balls of the same color as possible before reaching the last wall of each level. Remember that each ball with a different color is a trap and will cause one of the balls with the same color that you collected to disappear! Touch and hold the right half of the screen to move to the right and the left half of the screen to move to the left. Your score will be calculated when you cross the finish line and if your score is high enough, the wall at the end of the level with lower little by little and give you access to the next level.