Find or mark off a circle about 40 ft in diameter. Divide into two equal teams. One team starts inside the circle and the other team spreads out around the outside. Use two or three red rubber playground balls (about 14 inches in diameter) and throw them at the players inside the circle. The team inside is allowed to run around wherever they want, but cannot go out. You can only throw the ball to hit the team inside below the waist. If a ball is thrown and hits someone above the waist, the thrower has to stop playing. If a kid in the center is hit, they become one of the players outside the circle. The game is over when only one person is left inside the circle.