In Volcaner the bubbles are erupting and you had better contain them before they spill over! Different colored bubbles will pop up and you can only pop them by clicking on one that has at least two touching it in order for you to pop them. It's not so hard to keep it down at first but as time goes on, the bubbles pop up faster. Not only that, but more and more colors come out so it's hard to find a grouping of three or more. Save the red bubbles because you can pop those any time and they'll take adjacent bubbles with them. Beat the bubbles and the clock and play Volcaner!