Final Fantasy Infinite
Midgar has little to its name aside from being a convenient unloading place for shipments of goods from Cocoon. It’s close to Treno, which can cut down a bit on the travel time, or it’s more useful for shipping massive quantities over the river than down via the normal routes.
It’s primarily a shipping and receiving center for Treno, but has everything it needs to support a small town. It’s more self-sufficient than the cities, but the smaller size and economy make that easier to sustain.