Zombies and werewolves run rampant in Cryptic Studios' Blood Moon event for Champions Online. In this video the developers discuss the special events taking place during the free-for-all weekend.
As a long-time MMO player, I love the way developers tend to go slightly crazy when it comes to Halloween events. I used to get all giddy back in the day, when Everquest first started running huge, multi-zone treasure hunts during the holiday, and to this day I always look forward to seeing what the creator's of my favorite MMO titles come up with to celebrate the 31st of October. It looks like Cryptic doesn't plan to disappoint.