Guessed by The_Liquid_Laser
In my list there area quite a few city building and management games. The "construction and management simulation" as Wikipedia nicely calls it. There's still some more to come even when we're at #9 right now. You can really subdivide these games in two categories; the pure city builder, that is exactly that, where you build a large city from a more zoomed out perspective 'zoning' entire areas at once, and the more strategic management variety where you have to create something more zoomed in and set up supply chains and keep people supplied with goods and specific buildings. 'SimCity 4' is the quintessential example of the first type.
As far as I know, this is still the game where you can make the biggest city, and the one where you can just make whatever you want in the easiest most intuitive way. Maybe 'Cities: Skylines', if you use the so-called 81-tile mod, but still that's only one map. SimCity 4 has a load of maps tied together in one large region. It's up to you if treat that as sort of neighbourhoods part of one giant city, or all their own municipalities in one country. I made a whole bunch of those 'countries' over the years. With big cities, a capital (imaginary, because there's no such function), and smaller towns. I'd even imagine a history for this country and model some of the towns towards it. I had all the time to do so, I played this game non-stop for a very long time. It's one of the contenders of my most played game ever, because I really like city building and management games.