OK, ok, I should clarify - at the end Realm of Empires is a sort of virtual community so you can, if you want to, spend the whole day messaging friends. The intention is that you do not need to spend a lot of time to enjoy playing the game.
Also, the 15 minutes per day is our goal. We conciously decided not to reward players constant online presence and instead we'll offer tools to simplify repetative tasks. We've got a long way to go as anyone with 100 villages can attest to, however, we will get there! There are many ideas on the drawing board that will make it possible - btw, many thanks to all those players who offer their suggestions!
You see, may of such games reward activity - the more often you are online the better you will do. And they shy away from offering features that would allow you to login once or twice daily. I suppose those ads got to be displayed, banners clicked ;)
We decided to create a game for busy people, people like us. Everything in the game is designed with this goal in mind. I know many features are missing, but they are coming!