Secondly, the sheer amount of content in the game is staggering - all of the circuits from GT4 are in there, along with a car roster that appears to be just as comprehensive as its PS2 predecessor, if not more so, with the inclusion of the likes of Ferrari, Bugatti and Lamborghini. There's evidence of other, smaller tweaks that gamers will welcome: the ability to play your own MP3s from memory stick during gameplay, for example. The ability to install the game to memory stick if you're running from UMD is another. Tweaked colour profiles specific for the integrated display and the TV-out is another interesting bonus