At the start of game a number of pieces are positioned at random on the board. Turns consist of the player swapping a single piece with one in an adjacent square to obtain three or more consecutive pieces of the same type in either the horizontal or vertical directions. The lines of three or more consecutive pieces are removed from the board. The gaps created are filled by pieces falling from above potentially forming further lines of three or more consecutive pieces. The sequence is repeated until there are no more sets of three or more pieces of the same type on the board.

Over time the pieces on the board will solidify if they do not move. As pieces solidify so it becomes more difficult to find pieces to swap. A warning marker is displayed indicating which pieces are about to solidify.

Points are scored when you create a line of three pieces. Bonus points are awarded for lines of greater than three pieces. Additional bonus points are scored if multiple lines of three or more pieces are formed from a single swap, including the cascading of pieces.