Another variant of oddball, but instead gaining points for simply holding the ball, you gain points based on how far away you are from the area you picked it up. So instead of finding a nice little camping spot to hole yourself up in to gain points, you actually have to move the package to another location to gain any significant score values.
I cannot tell you how often I have seen people stay in one spot for so long that it became predictable where they will go once the ball is picked up.