Can we climb over the mountains into a different zone? Can we swim across a body of water into another zone(seeing as we have the new asura breathing apparatus shouldn't be a problem). The game has portals between tiny hills that you can almost look over, but you cant walk over because you have to walk 4 feet to the right and walk through the shiny portal. If it wasn't for the shiny portal there would be an invisible wall stopping you because GW2 is persistent and not open.
---------- Post added 2011-10-25 at 11:13 AM ----------
To a point WoW is an open world imo, not fully open, but open.
Most zones that herd you to a certain point can easily be bypassed by either climbing, swimming or flying.
Please don't think I am saying this in a negative way, I am just expressing what I think it is and has little to do with how I rate the game.