Hi @sulev, I really like games/contests that involve Steemians getting out in the real world, whether it is the host of the game or the contestants. We are trying to do similar things over at @ifc and I hope that we can also introduce similar concepts or ideas into our contests in the future as well!
Is your contest listed on @artz's Steemit Competition Compilation? It would be great for this treasure quest to be listed on @newbiegames as I think everyone can easily participate in this and have a lot of fun :)