Indstead of controls, objects, signs, letters, etc that are red are used. See how long it takes runners to figure out the theme color. Poker-O Pin a playing card to a control. Within a certain amount of time, players get the best had they can - 30 to 40 minutes is common. Each competitor can only punch 5 boxes.
Runners run around to the controls and try to remember what cards are at each control.
Then go back and punch the best hand. The next control is only shown at the control you are at. You can't write it down on your blank map. One personor group is responsible for the control. At the start, runners only have the first control printed on the map.