ya know ego, I didn't make the connection intentionally, but yes, I think it does relate to white city directly. I was about to say it only relates with regards to the tileset, but I do think this does have a similar theme.
I'm a big believer in unconscious material of the variety Jung speaks of, where the unconscious talks to us using symbols and vague concepts. My ambition in games like this one is to hint at a story in such a way as to draw the player into thinking in a meta way: a way which questions the nature of the questions. Whether I accomplish this... meh.