http://wifiarmy.com
The basis of the game is very simple. Kill or be killed. The game searches for other players in the area with WiFi, and alerts both players. Then the cell phone camera turns on while the two players hunt one another.
Keep your eye on treve2, my FPS isnt 100% consistent but you can easily SEE that treve2 is MUCH faster than anyone else. At 1:30, watch how fast his ghost speeds off the map.