Playing a game on Steam. Between last evening and this morning my games world size reduced. Trying to figure it out and am thinking it has to do with a Microsoft Windows 10 update. I have loaded a couple of new Civ 4 games locally with large worlds (Giagantic, Giant and Hugh) and while these options are shown under settings in the Victory screen, when I view them in the World Builder, they are all the limited views. Try to see if others are experiencing same type of issue or is it my personal PC issue. BTW, same issue when I try a Realism Invictus new game setup.