In country with any terrain whatsoever remember you can gain altitude and view the ridge lines to determine where you are. Though I have totally forgotten what mine was for 100 meters. A pace being every other step or one leg. Get to know your pace count for 100 yards and meters. some way points can have a container such as a coffee can with something different in it for each team to pick up.
Oh there are games like races across land, where teams compete.