Divide group into two equal teams. Draw a circle on the floor with a piece of chalk. One team of players is stationed within the circle. The other team is scattered outside the circle. At signal, the players who are stationed outside the circle try to pull the players who are stationed inside the circle so their feet are outside of the circle. At the same time, the players inside the circle try to pull their opponents stationed outside of the circle so their feet are inside the circle. Once a player is pulled in or out of the circle, depending on which side he is on, he becomes a prisoner and is out of the game. Continue the game for two minutes and count the prisoners of both sides. Next, change sides and play a second round. The team with the most prisoners wins.