Great art and unique idea using lights for the puzzle.
In terms of Game Readability I had a lot of issues with the controls, ZQSD was hard to use for me but i luckily found out that you could use arrow keys so that was ok. I had a similar issue with the interact 'space' key I didn't know it was a key until I randomly pressed it since MENU -> Controls didn't have the space bar I didn't even consider it and thought the only keys were: Escape, ZQSD, A/E and R.
An easy solution for this is just add text during the first level of the controls.
I also had another issue where if I was too close to something I couldn't interact with it.