A very ingenious use of light. It took a bit to understand what was going on, so maybe a short notice to stay away from the walls might have helped. Nothing a few seconds of experimentation didn't cover.
A bit more music would have been nice, and a scoring mechanism, either based on the time it takes to complete, or on moves. Or even both.
I'd love to see more mazes, and even new mechanics like trap doors or events that transform the maze. Well done!