You may not see it at first but all the action with Lost in Shadow takes place in the background. Rather than making your way through the environment of a mysterious tower, you'll be doing so by way of the shadows.
Players take the role of a shadow boy who will be making his way through the tower that's filled to the brim with puzzles and enemies (on the walls, at least). Light sources within the stages must be manipulated with the help of a "sylph" to solve puzzles and make paths to keep on going.
Of course, the light will also make some odd hazards such as shadow sawblades to avoid. As for why this poor boy must suffer living his life in the dark is a mystery that'll be solved in January 2011.