This is a puzzle tour, rules of the game is to block the merger, the combined approach is one of the numbers aside, when another figure to push past the wall of the four directions. 1 and 2 can be combined into 3,3 after the same number can only be merged, such as 3 to 6,6, and 3 and 6 are combined into a combined 12. When the end of the box to fill the screen, and can no longer be combined when the game will be rated based on your situation after the completion of the game