On a daily basis, Chatroulette is home to far scarier interactions than Realm Pictures’ zombie-themed “Real Life First Person Shooter,” but few—if any—are as endearing. The setup is familiar: A player is dropped into a gameworld and explores it through their avatar’s point of view. This world, it turns out, is filled with zombies and the player must kill those from whom you cannot run away. Along the way they can pick up weapons that might be of use. Should their health meter hit zero, they die. Game over. It’s all quite typical, really. Or, rather, it would be quite…