Not many game series can be referred to as genre-defining, but in the world of console racing games, Gran Turismo fits the bill. Since 1998, the GT series has aimed to bring the vivid world of auto enthusiasm to your PlayStation and PlayStation 2 through a combination of realistic driving physics, massive car rosters aimed at pleasing the obsessive collectors in all of us, and courses from around the world, all topped off with state-of-the-art graphics and sound presentation that's redefined the technical capabilities of the console each title has appeared on. With the fourth installment in the series, the aptly named Gran Turismo 4, we find the franchise at the peak of its quantitative powers in a game that makes superlatives such as "big" and "sprawling" seem somehow inadequate. Yet beneath all the considerable content, Gran Turismo 4 remains remarkably similar to previous iterations in the series, which, depending on your point of view, may or may not be a good thing.
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GameSpot