I play this game a while back, and unfortunately, I did not finish it before I reached the central area. However, I felt I got a good sense of the game despite stopping early.
First off, I will say that I liked the fact that you took advantage of the fact that you are making a game, and thus, user input kind of became part of story itself. Even getting lost on this bizarre rail system is its own narrative. I can dig it, and I can dig the world you set out here.
There is a big but to all this though. I couldn't get through. Despite having a map, for some reason I had trouble orienting myself within the system. This may have been partially by design, but I think the game's design would've been helped by having versions of the map that add X's or some marking indicating directions the player cannot go after discovering them.
But since that is my biggest complaint, I gotta say I overall liked this game :).