Summary: The first thing of this game are the graphics, it's amazing. The playability is just fine... There are more than 800 diferent cars to purchase in a system of race-bring money. Unfortunatly the loading times are very, very slow... and a recomend this game for a home playing only.
Summary: You already own a PSP probably if you're looking at this, and might probably owned a version of Gran Turismo on one of Sonys previous consoles or at the very least be aware of its existance. So you'll know its been an excellent title, outstanding and THE driving simulator on pretty much ANY console. To summerise - this isn't the version to buy. Don't get me wrong and start clicking 'unhelpful review button' if you a fan or the series.
Summary: I found this game hard work. I didnt like the infrastructure of the menus. The graphics during play are up to the usual polyphony excellent standards. It's smooth to play. I have, however, spent 10's of 1000's of laps on GT4. I've been spoilt. ;) This is a good game.. but didn't quite grab my personal satisfaction on long journeys.
Summary: Gran Turismo for the PSP is actually my favourite game for the PSP currently. I didn't believe the reviews when they said that there were more than 800 cars available and 45 tracks, but when the game was delivered to me by Amazon, i was amazed to see the reviews were correct. Different cars to be bought every day, and 45 tracks that will never get old.