DLC (downloadable content) Menu

To access the DLC menu, click the [DLC] button on the main menu.
DLC option

On the DLC menu, you may click the [On] button to enable a DLC or click the [Off] button to disable a DLC.

For the City Economic Simulation DLC, you may enable the Survival Mode if you like the challenge of building a nation from the ground up.  When the Survival Mode is enabled, the options available on the New Game Settings menu will be different to reflect the new gameplay mechanism.

Learn more about the New Game Settings of this DLC