Scenario mode: Scenario mode introduces custom game objectives, for instance custom starting cities, win conditions, and time limits, all of which can be shared into the Steam workshop. Natural disasters can also be disabled.
Natural disasters: Natural disasters occur unexpectedly, or under the mayor's discretion, which vary from raging fires to meteors falling.
Response units: To better counteract natural disasters, response units and services can be used to notify of an impending disaster.
Radio Ga-Ga: The Radio Ga-Ga is a broadcast network, which notifies the citizens of disasters and evacuation notices. Citizens may also listen to the music station.
Chirper hats: Chirper receives another hat corresponding to the theme of the expansion pack.