EverQuest: Prophecy of Ro (PoR) is the 11th expansion pack for EverQuest, a massively multiplayer online role-playing game (MMORPG). It was released on February 21, 2006 and introduced new content, zones, monsters, revamps, and new features.
 General information
The action occurs in several new zones, including the Plane of Rage, home of Sullon Zek, the Plane of Magic, home of Druzzil, and the lost city of Takish-Hiz. The zones for the city of Freeport and the Desert of Ro were also revamped. According to the press release, new features include:
Spheres of Influence
Interaction with game world Objects
Additional Bank Spaces
7 new Zones, and 6 new Instances
This expansion is intended for characters of level 50 and higher.
Source: Wikipedia, "EverQuest: Prophecy of Ro", available under the CC-BY-SA License.