A number block that can change its value in the range of 1 to 8, the number block can be moved up or down by using the two blue up or down buttons located at the two corners of the screen. From one side, consecutive numbers appear in a vertical row, and the task is to determine the correct position with the value equal to the current number block, adjusting the position of the number block to match. When the number block and the number meet, if the value is the same, the number block will go through the number and continue the journey. If the value is different, the challenge will end immediately.