These update regularly:
Empire Online
The World of Magic
TWOM is 2.5D and has real time combat. Empire Online has turn based combat and is 2D. I like TWOM more, but Empire Online isn't bad.
Another MMO on the App Store I liked is Yslandia, but it doesn't update anymore, and the servers are really laggy now.
As for games I actually still play on my iPod:
Chaos Rings (I and II)
Final Fantasy Tactics
Final Fantasy Dimensions
Final Fantasy (III and IV)
None are MMOs, and all SQUARE ENIX. What can I say, though? I like their stuff. (:
Bookmarks