Tug-o-War might be just the right party game for a bunch of rowdy children on the back lawn.
To play Tug-o-War a field is laid out. Two parallel lines are painted about 20 feet apart on the grass or drawn in the dirt. The rope is laid perpendicular to these lines. A cloth flag is tied to the middle of the rope. Two teams of relatively equal weight are chosen. They are required to position themselves along the rope on either side of one of the lines leaving the center area (or no man's land) empty. The referee holds onto the rope at the point of the flag as the rope is gradually made taught. He makes certain the flag is positioned precisely mid-way between the two lines. On his own command, he releases the flag and shouts, "Go!".