Are you a fast thinker? Check it out and learn to take the right decisions fast, as balls of different colour will be rushing from one side of the screen to the other and you have only one chance to drop it in the right place before the ball falls. Collect at least three balls of the same colour in vertical or horizontal position to make them disappear. Use bombs to demolish towers and try not to miss, or else it will ruin your plans. Sounds too easy? Try playing on a higher level. Good luck ;)