Well to most people it is a classic but to me another boring open world. It starts slow and stays slow until very end.
Most of time you just drive A to B watch a cutscene and drive again. There are not much activities to do and even if there are few they still includes driving and driving in this game just boring. As for story it feels unfinished something big happens and we don't see any consequence of it there are only two time we actually see (E.g Vito arrested for the selling stamps) and ending of Mafia 2 does not feel satisfying I mean it just happens.