'L.A. Noire' a game for grown-ups

It has neither the street-level realism of “Grand Theft Auto IV” or the sense of place of “Mafia II,” but “L.A. Noire” does something no open-world game has been able to before it: deliver missions that are actually fun. This may not sound like much, but poll any “Grand Theft Auto” fan, and he’ll tell you the vast majority of his time with “GTA” is spent ignoring the missions in favor of just driving around causing mayhem.