This is an awesome sport (or at least I think it is a sport?)
The goal appears to be to keep your man on top of the pole for as long as possible. I know, it sounds both fun and like a game played at bible camp.
However, this game actually has some excellent training value. When you see those dudes running at you and they form a human ramp for others to climb over, its the same effect your going to get when a horde of undead overrun a packed street full of citizens.
I would love to start a league here as I think the undead training value of all those bodies hitting each other is invaluable. You think your going to punch and kick and fight, but in reality your just going to get pressed into the bodies behind you.
Great reality check.