This new SimCity, then, works on real networks of Sim movement, commodities and resources. You’ll watch the ebbs and flows of the system you create as the fruits of your mayorship are ferried around the city. Whereas earlier games were all smoke and mirrors, here you’ll be able to see coal being mined then driven to your power station where the fuel-pile will visibly start to dwindle as you await the next load. With a coal excess you’ll be able to trade with your neighbours, but there’ll also be a World Market where you’ll be able to buy and sell what you’ve created to fellow mayors around the globe.
Source: The Sims Hub