Reply To: Can you build big cities ? Home › Forums › General Discussion › Can you build big cities ? › Reply To: Can you build big cities ? August 27, 2014 at 11:06 #3678 TossiParticipant Cities grow as they are supplied with passengers and goods. They will spread along existing roads but they will also build the roads themselves. This reply was modified 6 years, 6 months ago by Tossi.