I can't beleive they could fit it on a UMD it's HUGE!!!
Graphics: The Graphics aren't the best on the PSP though considering the game is HUGE the grphics are superb.
Sound: Overall the sound is good though sometimes the radio will skip ahead which can be confusing when your are listening to the Talkback station.
Value: The game is just as big as the rest and you will have plenty to do when you finish be it going on rampages doing the good old taxi, abulance, etc misions or just driving you will always have fun.
Other: the only minor problem I found was that since it has to load the next island when you travel to it I stopped going to different islands if I could avoid it.