If you are looking for a legitimate copy of the game, it is available under its international titles:
Assuming you want a close experience to “Imperium Civitas 3,” download Imperator: Rome (Paradox Interactive) legally: Imperium Civitas 3 Download Ita Pc Game HOT-
The review snippet "Imperium Civitas 3 Download Ita Pc Game HOT-" likely refers to Grand Ages: Rome If you are looking for a legitimate copy