Stack as many as possible balls with matching colors & gain points. Stack 3 or more matching colors balls horizontally, vertically or diagonally to clear them.
As the ball moves across the board, click when you want it to drop down. The ball will travel the board from side to side before falling into the first column unless you click first. Stack 3 or more matching colors balls horizontally, vertically or diagonally to clear them. Complete each level by filling the right meter.
A context menu should be shown when right-clicking or, on touch devices, long-pressing in the game. This menu especially allows to play in full screen and control the volume.