Wow this is very well done! The visuals, audio design and the ost were great and I think the gameplay fits well with the theme. One thing I'd change it's to not let you get off the train on the first loop, at first I thought that I only needed to check differences between the first cart and the next ones (because I also played exit 8 and wrongfully assumed it'd be about arriving to further and further carts, and because I thought there'd be 5 carts, but it was actually 5 trains I had to get on oops), still once I understood it the game was super enjoyable.
I was even so lost in thought that I started to think that the lights on the ceiling were anomalies at one point lmao