Fantastic concept! :)
I must have made half a dozen attempts, grumbling "Where'd you hide it, you (so-and-so)?!" to myself before finally finding success. lol
One thing I'm curious about, does the day/night cycle progress in real time, or only when your character is moving?
I also had a stray thought that it might be cool if there was some kind of leaderboard that keeps track of either the players whose hiding spots have gone undiscovered for the longest number of IRL hours/days, or who's had the most people try and fail to find said hiding spot.
Again, love this idea. I can't think of any other game that's done this, and I've played a LOT of video games over the last three decades or so. Kudos!