Score points by creating matches of 3 or more of the same ball in a row either horizontally or vertically. Swipe balls to swap them with balls next to them to create matches. Only swaps that create matches will be vaild.
Complete the level by reaching the Goal Score for the level. The Goal Score must be reached before running out of moves allotted for the level. The number of moves left is found on the chalk on the bottom left of the screen. if you run out of moves before reaching the Goal Score, you lose the level and must try again.
The ReRack button will shuffle the balls on the level, if you determine you do not have any valid swaps available. However, it will cost you a move.