I guess I just don't see what the advantage is from creating the environment manually. Sure, if you know of a warehouse that already has great graffiti and the

I guess I just don't see what the advantage is from creating the environment manually. Sure, if you know of a warehouse that already has great graffiti and the exact layout your game needs then go for it. But what if you need a stairwell or a hallway? Are you going to build it? Or have to find one and then modify it so it matches the photo-realistic nature of the process? I'm sure there are level designers out (and I know that there are 3D artists out there) that could easily recreate this. Usually in-game they are given limits that prevent them from doing something like this though.