Final Fantasy XI
This is a guide for Final Fantasy XI, also known as FFXI, an MMORPG for the PC, Sony PlayStation 2, and Xbox 360.
Currently, there are 2 expansion packs available for Final Fantasy XI. "Rise of the Zilart" adds many new areas and job classes to the original game, as well as 17 new story-based missions. Zilart was sold as an expansion in Japan, but was released with the game in the United States. The second expansion is "Chains of Promathia," which did not add any new jobs, but included a large new storyline and new areas. A third expansion pack has been announced, "Treasures of Aht Urhgan." This expansion will add a few new areas for exploration, a few new monster types, and three new character jobs (Blue Mage, Corsair and Puppetmaster).
For further reading, see this dedicated fansite on Final Fantasy XI, Allakhazam.