Have each player number off. An option is to have more than one person per number.
After everyone has a number, have each player group together in a bunch.
One person starts with a ball in the center of the group
The person with the ball throws the ball up while yelling a number.
Everyone runs in all different directions away from the bunch except for the person(s) whose number is called.
The person(s) whose number is called catches the ball and yells "Spud!" As soon as this is yelled, everyone has to freeze.
The person with the ball is allowed to take 3 giant steps toward any player.