There is also one special type of bubble that appears rarely. The bubble can appear at any random time, and has a clock image engraved. Whenever the bubble bounces, the engraving changes to a star, and when the bubble bounces again, the engraving changes back to a clock. Popping the bubble when the clock engraving is present causes all bubbles to stop movement completely for 9 seconds, while popping the bubble when the star engraving is present causes all bubbles to be popped and the game screen gets cleared, filling the rainbow bar with every pop made from the bubbles that are being destroyed.