Amazing games, but I think I found some bugs in the latest version (30d):
The Masked Monster no longer appears
The Hand Monster doesn't appear in the Ground Floor Lobby anymore.
Nestor's Head disappears inside the Smiling Lady's room after chasing it down same goes for all his body parts. (I don't know if we're supposed to be able to catch him or not but I assume this is necessary to obtain the first Astronomer's offering)