Ultima VII: The Black Gate

You return to Britannia two centuries after the the events in Ultima 6 and a someone that goes by the name The Guardian now try to get the power over the land. There are also a religious order that go by the name The Fellowship that seems to gain more and more power and they seem to be connected to the Guardian. The major plot takes you all over the world when you search for Elizabeth and Abraham, two of the founders of The Fellowship. The game world is very nice and you are free to walk around as you wish and solve sub quest and explore.