Description：Balls are planning to sink your submarine. As they spiral towards you, you will have to fight them off by shooting similar coloured balls into the string. When you create a segment of three or more balls of the same colour, it will collapse. When you have eliminated all the balls, you will advance to the next level.

Instructions：Aim your sub by moving the mouse. Switch the color of the ball by pressing space. Left-click to shoot the ball.