The interplay of light and shadow can be seen everywhere in life, and since the days before digital products were popular, people have been spontaneously making rules for shadow games.

This study aims to investigate the combination of light and shadow with interactive devices in more depth, summarize the concept and techniques of integrating light and shadow art, game design, and interactive devices, and create a video game "Long Road" using light and shadow as the control element of the game device.

This study wants to use the ambient light into the game development design, by adding the light-sensitive element in the game controller to achieve game interaction with the light-sensing function, hoping that players from the "Long Road" this creation game, the use of light interaction function to get the fun of the game.