Recently, I picked up Little Empire, and while it does have a few technical issues, I can't seem to put it down. In fact, I normally get bored of new games pretty quickly, but I've probably logged a solid 5 hours of gameplay within the last 2 days. Being a ruthless king is hard work, you know.
First Things First
Camel Games describes this game as the "World's first LBS (Location Based Services) mobile MMO." While I can't be entirely sure this is actually a world first, it definitely is worth mention.