Instanced zones are a relatively new thing in the world of the MMO. These zones are shards off of the player populated zones where groups of adventurers can cross over and have a dungeon crawl to themselves without having to worry about sharing space, having kills stolen, or waiting in lines to attack a monster that spawns once in a blue moon. Many of the newer MMOs, like World of Warcraft and EverQuest 2 have taken to this approach, with some bit of success. But Sigil feels that instanced zones cut away from the appeal of an MMO altogether.