Mission: Sweep all mines as soon as possible!
This is an outdoor activity using GPS.
Virtual mines are put in a specified area. You can find them with a mine-radar. You have stakes and drive them one by one. Two consecutive stakes are wired and all the mines under the wire are swept. A number of stakes is limited. And be careful not to step on mines.
This is a very simple game but you'll find it unexpectedly difficult and interesting.