Space Time Studios’ Pocket Legends is a scaled-down free to play MMO for the iPod/iPhone/iPad.
It offers three basic classes, along with typical MMO feature such as leveling, upgradeable stats and skills, etc.
It has been getting very good initial reviews. Space Time’s free to play model seems to be selling additional content/areas beyond the initial area for a fee, though at the moment there isn’t much available at all for purchase for the game.
Nice, and clearly just the beginning of the transition of MMOs to mobile devices (along with the increasingly prevalent mobile enhancement of traditional PC-based MMOs).