Soleil rouge
Member
Mafia is still about the Italian mafia in the U.S. The enemy faction is the Italian mafia. One of the friendly factions is also Italian mafia. Mafia 3 just added the black mafia and Irish mafia to the mix because it made sense within the game's time period and location.
They were not the primary focus like in the first two games, which is why I feel the title is a bit misleading. Mafia is a Sicilian word. The reason I played the Mafia series was specifically because I loved living out my wildest Mario Puzo dreams.
As I said before, the series went in a completely different direction. The lead writer of the first two games left to create a new studio and took most of Mafia's original staff with him. I'll eventually get part 3 on sale since it looks pretty awesome in its own right, but I really wanted a true sequel made by the original team.