Tap the screen to fire a number bubble towards the collection at the top. Match the number on your bubble with the same number in the cluster to pop them. Plan your shots to cause chain reactions for higher scores. Use the walls to ricochet your bubble into hard-to-reach spots. Eliminate all bubbles before they reach the bottom line to progress to the next level. Watch out for the timer in timed modes to maintain your progress. Practice your accuracy to dominate the game.