One person climbs on to a wall and traverses several moves along, the next person traverses to them and has to go over them. The next person traverses along and goes over the first person and under the second person between there feet and hands. Once everyone is on the wall, the first person goes over and under everyone and it starts again if you have enough wall! This can be played with as many people as you want and the more people, the longer you have to stay on for. Good for all ages from young to old, just watch the falling off.