Use the numbers as a hint to avoid dangerous, and find the route.The number is dangerous or the routes (by setting) around it.Infer the route from the arrangement of numbers and confirm it.The row of 1 and the row of 4 are always displayed.(Its some info that might help)When the stage is cleared, player gets some points.To use point to visible the invisible number.It will help you to reasoning.It get a higher grade title according to the remaining points when the story end.In the Mugen-Mode, to be playable forever until the player abandoned.Record the number of the Stage cleared, and of the hint used.