Balance Tug is a pretty straightforward game. Recruit two volunteers per round. They will stand five feet across from each other. Each person must crouch without their bottom touching the ground. They must also keep their feet together. No wide stances. Give them the opposing ends of a tug of war style rope. When the game starts they can tug or release slack without letting go of the rope at their discretion in order to cause their opponent to fall forward or fall backward. Last one in the crouch position standing is the winner.
This game is used in corporate team building experiences and is still fun for kids. Watch the video below for simulation.