Ridgerunner
'Ole Wise One'
There is a game called geocaching which my employer did for a bit. It seems to be pretty much the same idea, only without Pokemon. They would follow GPS coordinates to find things in a scavenger hunt style of play.
My daughter, Son-in-law and 2 grandsons do the geocaching thing but without the GPS. Written clues, books documenting your success when you find the location. I even went on a excursion on the Canal in downtown Indy with them finding a location. Walked my ass off...