Final Fantasy XI: Treasures of Aht Urhgan

"While it's still basically the same game with new places, there's enough new content and the new jobs add a lot of variety to the aging MMORPG. If you're new and curious to MMORPGs, be cautious of FFXI since it is a game that requires large chunks of playtime to get anywhere. If you think you’re more casual, then there is always a certain RTS-turned-MMO that would better suit your schedule, but if you’re ready for a challenge and are willing to work hard to get good, then consider giving Final Fantasy XI and Treasures of Aht Urhgan a try."