Caesar III is a city building game, in which you place building and lay out zones. You are in charge of a small province, and hope to make it as peaceful and prosperous as possible, following the advice of your citizens to make it work. The game also features defending your city, by forming an army. and for trade, but you never leave your city. You must pay attention to the Gods, who can inflict disasters if not satisfied. As the game progresses, new technologies become available, which you must allow for.