User blog comment:JackFrost23/ZOMBIES IN FREE ROAM!!?!?!/@comment-3455248-20110312171533

I wonder if the zombies were limited to Blackwater, since that's where you played Undead Overrun, or if they were throughout the Free Roam world. Adding zombies to an existing gang hideout population would certainly up the challenge (or simplify it if they attack the gang too).