Good Myst style puzzle!
I didn't figure out how to get out of the room, mostly because I'm in a hurry to review more stuff. Assuming it's just the "Escape room" puzzle, you should probably continue with these one-by one until you have a full puzzle game.
By the way, there's a ten second gap between when a user clicks "Play this game" and when you get the preloader. If you can't eliminate it, you should warn people in your comment box. I was about to give you a zero for yet another "white screen" entry, (for I have seen so very many of those) when it kicked in.