An immersive piece of work that consists of realistic racing with constant updates from the developers.
This is one of those games that is hard just to turn on and jump in. It takes awhile to get used to the initial gameplay because of it's realistic "feel" when driving the cars. You won't get to drive any flashy cars at first, like a Ferrari or Lamborghini, because you'll have to work your way up to make more money to purchase cars like that. Also, there's a full range of customization options for every vehicle, consisting of engine parts, the type of tires to race with, and even the option of giving your car an oil change after driving for so long. If you're a big race fan, you'll enjoy the endurance races with the longest being the "La Mans" 24 hour race... and a few more that endure for about 2 hours and 4 hours.
The game does have a few cons; my first complaint is that you'll spend just as much time in game menus as on the track (which is just as fun) because you must customize vehicles, browse vehicles, and prepare for races. With that being said, I wish that the lettering (or font) would be a little bigger. I usually play with a 52 inch HDTV and even it's difficult sometimes to read the statistics of a car while trying to purchase one. Also, the sound of the cars could use some work. The engines sound a little "whinny."
Overall, Gran Turismo 5 is a great game, being constantly updated sometimes on a weekly basis, with cars being added, different races, and different tweaks being fixed. And you're guaranteed hours (and I do mean hours) of gameplay... depending on your skill level, you're bound to play this game for possibly more than 100 hours.