Thanks for the great and thorough feedback! Interesting that the ghosts were moving around buildings. I had a bug where my capsule enemies were going through everything so I switched to ghosts. Apparently I fixed that bug somehow!
Indeed I wanted better sound design, some post processing for mood, a resizable game board and more gameplay in the spirit world. I was pondering a procedurally generated board creation that would turn neighborhoods into a maze that would require you to solve your way around the world by shifting between the upper and lower worlds. But new job taking all my time.
I think there's something there for a baseline for mini virtual world board games. I might keep playing with the concept to get a robust baseline for mini mixed reality board game worlds.