не знаю насколько по теме, но это же ваще:
Ingress
Ingress is Google's first foray into alternate reality gaming where cryptic clues are strewn about online and in the real world.
Currently at 'invite only' stage. You can request an invite at: ingress.com
http://gladpwnz.ru/forum/showthread.php?p=1409508
http://www.newscientist.com/article/...gold-mine.html