Remember The Godfather? Well, what a game. I recently buy this VG and it's maybe one of the best I ever played. It is a heavy violent game with a very complex a innovate structure. The main character (you) is a mercenary of everyone that could pay good money just for dirty jobs like stole, kill, destruct, extortion, protect and plenty of things that your bosses need to. Of course it's not a kid's game.
One of the biggest points of this VG it's the non-linear structure. You just decide where and when to pick up a mission. You can even be a cop, a paramedic, a fire man or a "Taxi Driver" just to make a little more money. The city in where you play is such big that it will take you a lot of time to know every place. And maybe you never totally finished.
The title say it: Grand theft auto. And that is what you are. You go walking on the street, you need a car, it's occupied? just take off the driver and accelerate as fast as you can. police? they just care about themselves so if you want them to p*** off, Shot em! they will follow you, but who cares? you are a great criminal. And if you want to feel more alive take a woman to the back sit of the car for just a few bucks.
Really if you like complicated action and strategic games this is the one. Of course you must remember that it is a VG about maffia and everything that is normally around in this world - explicit violence, prostitution, corrupted cops, drugs, etc... - and you need to take it like the thing it is: Just a game, a mature one.