
Now, machine translation hasn't given us a 100% clear picture on how to unlock these maps (or how many there are, for that matter) and what is needed to essentially "clear" them, but we do know it's a password-based system that will unlock them and that, much like the scenarios in the Sim City of old, you'll start these bonus maps at a certain period in the city's development.
Click on through to check out some screens from the unlockable maps.