Gran Turismo 4 harkens back to an age where you got everything you wanted in games from the get-go, no downloads, no DLCs and no fixing things as they go, you paid for one game and got about three games worth of content, great balance between quality and quantity that you'll ever see in a racing game and that's hard to beat

The progression is almost RPG-like, and the enormous numbers of cars, tracks and events creates near infinite replay possibilities

It's not perfect with the mountains of content disorganized in a great sprawl that you can refer to as a "mess", it shows it's age like any other PS2 era game in terms of technical aspects, but the quality and quantity of the races and single-player content is unmatched by modern iterations of Gran Turismo