FC this was great! I thoroughly enjoyed it, I immediately got invested with the world with the introduction of the switches, the music fit the mood perfectly and your pixel art has gotten so good now!
But most of all it's the intractable things - I spent so much time with the shapes and the train area. You really nailed everything here, personally I find audio in GM a pain to work but even the piano segment at the beginning felt just so right,
Awesome work as always FC - you're a real inspiration with what you do.