You can shoot again. If you shoot a zombie they die. If a zombie gets too far away they are repositioned closer by. The darkness around the border of the screen and the cloud shadows or whatever you want to call is back.When you get too close to a zombie the borders of the screen turn red and the camera zooms in. When you or a zombie is injured blood is dropped. I’ve worked back in on screen text but unlike with the older releases this time text is textured onto polygons so it scales perfectly with the resolution of the screen. I think that is pretty much everything that has changed. Still not as complete as the twelfth release but its getting there.