In Lost In Shadow, players are confronted with a mysterious Tower in an alternative world. The Tower is filled with moving shadows yet at the same time, casts a large shadow on everything beneath it. With the help of a winged sylph known as Spangle, players can move lights in the foreground to create new shadowy walkways to previously inaccessible areas. Unaffected by gravity while traveling through this medieval landscape, the shadow boy solves mysteries and fights off enemies who stand in his way. The game's combination of light, shadow, background and foreground creates a unique blend of novel gameplay features, morphing landscapes and artistic visuals.