One of my co-workers was telling me about this today. Apparently during the Fall they do this every year, but its a paint ball game that you play at night and your targets are zombies. There are 20 people in a game at a time and I'm not sure how the teams are divided up, but it costs $45 per person and lasts about an hour and a half.
This place is located out in Poinciana which is a little further south of Kissimmee.
Check out the site: http://www.zombieadventure.com