Square Enix' persistent world role-playing game receives its third expansion disc in Treasures of Aht Urhgan. New jobs, monsters, and areas are available to undertake, battle, or explore, respectively, adding more diversity to the existing Final Fantasy world of Vana'diel. The new realm is reachable by ship from the shores of Mhaura after the requisite quests are completed. Once players fulfill their objectives, they will be whisked away to the Empire of Aht Urhgan, a region populated by a diverse set of zones that includes twin volcanoes, wastelands, underground caverns, and more. Trolls, black puddings, beast men, and other unsavory monsters populate the lands.

New mission types include assault and besieged. The former supports three to six adventurers in a series of missions to earn assault points, which can be traded in for items, cash, or experience. The latter involves defending a fort or town from marauding beasts, with successful attempts rewarding players with new quests or equipment. Players are also able to explore the world using one of three new jobs or character classes, including a blue mage, corsair, and puppetmaster, each with distinct abilities. Chocobo breeding is introduced in this expansion as well, allowing players to nurture their flightless birds over time before entering them in races for cash and prizes. ~ Scott Alan Marriott, All Game Guide