You can download the expansion through official digital platforms. Since it is an expansion, it requires the base game to play.
Available as part of the SimCity Complete Edition , which bundles the base game and all DLC. Step 2: Purchase and Download Launch your preferred game launcher (EA App or Steam). Download Simcity 5 Cities Of Tomorrow
Expand Your Horizon: How to Download Simcity 5: Cities of Tomorrow You can download the expansion through official digital