I myself am a fan of the the Diablo Series (Diablo III needs to be released soon! > ) Is this game worth getting? Has anybody here played it?
I think Underworlds is a much better choice. Magestory still plays like it's a work in progress even with the latest update.
If you enjoy playing a spellcaster rather than a swordswinger, then MageStory is better than Underworlds. It's more challenging than Underworlds, imho.