This is very impressive. I wish I had the kind of artistic talent to make something that really is very minimalist look so good and so polished. My game also involves light but is a much simpler implementation that this (which is saying something because it took me a lot of learning and time to implement!). I kept thinking about how I would implement these kind of mechanics in my own game, and lets just say you've given me a LOT to think about. I rated this exceptionally highly - I think its masterful. Well done.