Throngs of undead trample the earth both night and day as Norrath's sun withers. With each passing hour, the growing numbers of creatures of the night rising from crypt and grave seem part of a grand design to overwhelm the lands.

Trouble also lurks deep beneath the Buried Sea off the coast of Odus in a city named Katta Castrum which has remained undiscovered for hundreds of years. It is a city built to sustain the beloved leader of the Combine Empire named Tsaph Katta who was poisoned by General Seru. Generations of Combine Loyalists have tried to cure and awaken Katta while they house threatened populations of Kedge, Shissar, and Sphinx. But in recent times, the artifact that powers and protects their city has weakened. Without it, the city will be crushed under the pressure of the sea.

Only the most intrepid Norrathians have the power to save them.

Ship-to-Ship Combat: Cross the plank and fight for your life on the open seas as you raid pirate vessels!

Two Paths of Advancement: Battle pirates on the open seas or dive deep beneath the sea to Katta Castrum, lost stronghold of the Combine Empire.

New Missions: Take your group through more than 60 challenging new missions ranging from defending merchant vessels against marauding pirates to uncovering the secrets behind the combine city and the danger that threatens it!

Guild Banners: Guilds can create a unique Guild Banner from a large selection of symbols and colors. The banner becomes the mark of the guild and when enough guild members are in the same zone (two groups), the guild leaders or officers can plant the banner in the ground. While a guild banner is planted, members can use the Guild Hall portal to teleport directly to the banner. This allows players to easily catch up with guild mates. The guild banner can also be upgraded to provide different effects, like regeneration. Upgraded Guild Banners are expendable, but provide an effect to everyone in the guild who is in range of the banner while it is planted. Guilds can only have one standard up at a time. You can access Guild Banner information through a tab in the Guild Window and banners will be sold in the Plane of Knowledge.

Fellowships: A Fellowship is like a mini-guild for those who play together regularly. Fellowships have a maximum of six players and exist in addition to guilds. All members of the Fellowship get a token, access to a Fellowship-only channel, and the ability to create campfires when at least three "fellows" are in the same area. Fellows use their tokens to transport directly to the campfire allowing them to catch up with their regular playmates quickly. Campfires can be upgraded to provide effects to nearby Fellows. These upgrades are expendable and need to be repurchased. A Fellowship can only have one campfire active at a time. Randall of the Fellows in the Plane of Knowledge will register Fellowships. Fellowship items are also available for sale in the Plane of Knowledge.

Energeian Power Source Items: Tapping into the Combine Empire's technology, players gain access to a new inventory slot for an Energeian power source. Particular pieces of Energeiac armor will tap into Energeian power sources, gaining benefits from the type that is equipped. For example, an Energeiac sword gains a chance to cast a fire damage spell if a fire Energeian source is equipped or a frost spell if a cold one is. Energeian power sources are expendable and will deplete as they are used, but can be changed on the fly to let players customize effects simply by changing the Energeian source. Energeian items will be for sale from vendors, found on monsters, and some can be tradeskilled.

Toxxulia Forest: An updated Toxxulia Forest is now available that includes Kerra Ridge and access to The Buried Sea expansion zones.