A couple kids at Goucher College invented an interactive massive "role playing" game involving a zombie infestation (but only pretend, because I don't think the school administration would look kindly upon their human students blowing away their zombified classmates' head with shotguns--which is most effective against zombies, since we all know that the only way you can truly kill a zombie is by shooting it in the head).
From humble Goucher origins, this game has now supposedly spread to colleges all across the US including Wesleyan, Univ of Illinois, and Cornell (What else are they going to do there?) where throwing a zombie over the waterfall is NOT permitted, even if the zombie asks for it, because he or she is depressed...at being a zombie, of course. In fact, if a zombie is seen staring too intently down the waterfall at Cornell, all humans are permitted, in fact encouraged to grab that zombie and escort it to the local health services.
Rules are pretty straightforward. Zombies must feed (accomplished by "tagging" a too slow victim) every 48 hours--if not, then they will starve to uh...death...again...for reals--and wear a bandana around their head to identify themselves. If a zombie is hit by a permitted weapon, they are stunned for 15 minutes--and cannot interfere (eg. shield other zombies, etcc) for that duration.
Humans must...avoid getting tagged by zombies. Nerf gun foam projectiles and socks are permitted weapons.
Humans win if all the zombies starve. Zombies win if all humans are "convinced" to become zombies.
Links to more information and detailed rules, along with a pretty fantastic documentary can be found here.
You should definitely watch the documentary that can be found in the link above. Afterwards my minor critiques of the game below will make sense. As follows: I think zombies shouldn't be allowed to run as if they weren't zombies at all. Zombies, other than the desire for human flesh and spreading their zombie love, are essentially a decaying yet animate corpses. There is something antithetical about a zombie sprinting like an Olympic athlete running away from a drug test. So my addendum to the rules is that Zombies are permitted to walk and walk quickly however, running is banned. And for the humans, I saw them pick up a sock to reuse after it was tossed at a hungry zombie. That's retarded. Grenades or any other incendiary devices are not recyclable. Therefore, once any weapon has been thrown--it can not be used again until after a reasonable period of time after the zombie attacks cease.
I'd love to play this game in NYC. Someone should print out the index cards and go around and hand it to people. Those people have now become zombies. The index card would have a link to the website with the rules, with instructions to produce their index cards.
If you've read this, consider yourself digitally bitten. Ya'll are now a soldier in my zombie army, bitches!