I created the world of Or'Bienn for my kids to play in. It is very sandbox style play, and as we have gone on 2 other players have joined the party. I run all of my homebrewed games in this world, and set campaigns before or after other campaigns. My hope is that at the end of my life there will be a long and storied history of the world of Or'Bienn that will be able to live on as a place of it's own.