I absolutely love it ToT
Once I got it this was a trip. At first I thought the sparkles were coins in a room so I was bashing against a wall like "I swear the coin keeps moving.." haha ^^ I managed to finish it without drawing maps, had my hand over my eyes using 100% brain power :p
I have no idea how you'd expand on it without people needing to just draw maps though ,':/ kinda defeats the purpose if you do. perfect game! :)