Players need to control the square. Hold down to make it rise, and release to make it automatically fall. The square will automatically shoot at the moving digital wall. Each time it shoots, the number on the wall will decrease by one. When the number reaches zero, the square on the wall will disappear, and the player can pass through. Players need to identify the size of the number on the square, operate the square to select the correct digital square to shoot, and pass through the obstacles to obtain a high score.