So I've probably played for 4 hours or so over the last three days and still have not seen a SINGLE ZOMBIE. What am I doing wrong? I have a good amount of gear now, but still just wandering around with the occasional interaction with a person (seen 2 total, both nice). ARE THERE NO ZOMBIES TO KILL?! I've been on several different servers, both daytime and nighttime but NOTHING. Any suggestions?