The game field is a square of cells. Each side of the square has a layer of bubbles, and there are some bubbles in the centre of square. When you click the marginal bubble, then it will move towards the centre of square until it can not continue to go ahead. If three or more bubbles of the same color are connected vertically, horizontally or in an L-shape, then they will be removed, all the bubbles can not connected to core of square will be removed too. Your score will be improved when bubbles are removed. If all the bubbles are connected together, then the game will over. Top scores are saved in the Hall of Fame. Those men will be the Kings, your mission is to challenge them. If your score is higher than them, then you will be the new King.