Some months ago we have been shooting in beautiful and vibrant Helsinki at NextGames. It was cool to talk to people who are just defining the future of game play in terms of augmented reality. Nowadays games are services provided through the cloud. Especially when they are location based and played globally, there seems no other option to dynamically inject events into the game and interact with the players in real time.
And regarding the realism of the game, you just have to look around to see that the walkers eventually become part of our life. Whether you are a player or not.