In Glory of the Roman Empire Haemimont provides a non-linear campaign of 30 missions to play through, with 11 historical towns in the Roman Empire you can experience. There is also a free-building mode where you can simply play with no specific campaign based on a pre-selected set of starting points.
Finally there are challenge modes which give the player specific and special goal to achieve, such as keeping your people happy while they eat double the normal amount of food or being able to stage two gladiator fights in your local area. Unfortunately the game does not feature multiplayer, which could limit its replay value.
One of the more interesting parts of Glory of the Roman Empire is the fact that your townspeople are not static. They actually grow older and wiser while new townspeople are born. As a result, you have to maintain a balance of young and old folks in your town. This is needed in order to keep the knowledge of certain tasks moving through the years. Of course, you can also choose to fight as well once you gain enough townspeople and experience to create a military force.
While not designed to be a true RTS game like Rome: Total War, Glory of the Roman Empire does allow you build barracks to train Roman troops to take out your neighbors.