Which Assassin’s Creed game introduced the Assassin recruit and city-management system centered on Rome?

Assassin’s Creed: Brotherhood introduced the Assassin recruit and city-management system centered on Rome.

The 2010 game lets Ezio recruit civilians, train them, and send them on missions across Europe. Recruits gain experience and ranks, and they can assist Ezio during missions when called into action.

Brotherhood also gives Rome a restoration layer. Ezio liberates districts by destroying Borgia towers, then reopens shops and repairs city services. These activities generate income and expand the player’s influence across the city.

Assassin’s Creed II contains economic upgrades and a smaller network of allies, but Brotherhood makes recruitment and Brotherhood management a central system. Revelations later continues the recruit concept while adding its own territory-defense mechanics in Constantinople.