Well, just from looking at what Ive seen in 5 minutes, It looks like there will be 5 main circles around a central circle once all is said in done (from images I've seen) I think the larger circle is the city limits, the wall looked circuluar in the art leak, and then maybe the 5 smaller circles are areas within the city for each faction (5 factions) maybe the gaeme is a fight to see who controls the city?