A really neat idea! Took me a little while to work out that I could change rooms that I had already put down but I got there eventually. I stopped playing a little earlier than I might have done because the lag on the overview section was quite bad and it made it a little frustrating to play. But really cool concept and I can imagine a lot of imaginative things being done with it. Rated ^^
Please consider playing and rating my submission if you get a chance: https://talfuin.itch.io/the-hungry-ghost