Nice! You've nailed an aesthetic that really works in your story's favor. The puzzle-y bits are simple enough for stupid people like me, which is always appreciated.
This is a very small issue, but I think worth noting if you have any future plans for this. Hitting the "x" button of a window that was over another window closed both windows. Just a little something that bugged me at first.
Overall, really cool. Plus, I'm a sucker for a game with good writing, and the writing here really works for me. Great work.