Reply To: Hordes of brain eating zombies!!!
So tell me, is "Mall of Horror" at all similar to the separate series of tile-based board games called "Zombies!!!"? (The exclamation points are what distinguish the title of that particular franchise) Well, I hope not, because I've played that game several times with some zombie-obsessed friends and have had to give a flat across-the-board refusal to ever play it again. Our last (and my final) game lasted 5 hours because everybody died once at the beginning (you "respawn" infinitely), and after that the zombies just won again and again. I now loathe that game with all my being.
As for zombie marches, I think the idea is fun and sounds like it'd work really well. 
I have a friend who told me about one of those last Halloween. What's great is that they do it on campus and tend to pick up spur-of-the-moment recruits by "eating" them, so the lurching party gets bigger and bigger. Plus our campus is right next to a spooky graveyard!
There's just one thing I worry about, though: as harmless and fun as it is (or should be), I kinda worry that some paranoid, cowardly idiot somewhere in the country might grab a gun and start shooting at the mock zombies. 
I hate to worry about it, but really, people have done much stupider things in the past…