It's basically a week-long game of tag, where a few people are "it" (the zombies), and the rest have to stay away and defend themselves with nerf guns (humans). There's also missions and power-ups and stuff, so its really cool.
Lol yes JDH, lets replace the nerf guns with paintball guns. That'll stop those zombies for sure!
Dude that's awesome! I just got into it this previous semester. I also went to NYC for the Come Out and Play festival, and HvZ won the Player's Choice award. It's soooooo much fun! Anywhere I go, I now look for any little thing that I could use to tweak my nerf gun. >.<