Australian gamers shift from megabytes to 'live action' zombies A high-pitched scream pierces the air as a "zombie witch" in a dirty, white dress sprints down a street at a Sydney university, hair whipping around wild eyes as she chases a group desperately scrambling to get out of her way. Welcome to "Zedtown", a real-life adventure event based on video games. IMAGES AND SOUNDBITESREFILE TO CORRECT NAME OF ORGANISER from Tim Ruse to David Harmon