Choose either 'Plains' or 'Water' as your default terrain, depending on how you see your region developing. Hovering over it will dislay the tooltip 'Create New Region'.ģ) Give your new region a name. On hovering over it, it will display the tooltip 'Region View Options'.Ģ) Click the highlighted button. If you are unfamiliar with the process, here's what you need to do:ġ) At the top of the screen, click the highlighted button. Here, you'll find the option to create a region. The first thing you'll have to do is run SimCity 4 and navigate to the region screen.