Having just bought this I have to say that this is an intensely addictive game. Every time I play it I just say to myself "I'll do this mission and then turn it off" yet I find myself doing the next one then the next one. If you get bored of the missions then you can go for side missions which range from hijacking cars, doing taxi jobs or simple street racing. If you get bored with all that then you can simply take a drive round the streets, go on a shooting spree if you want. Very highly recommended.
A really adictive game, free roaming and great 70s music and cars. If you complete, get syuck or get bored of the missions you just roam free and do what you want, with cool weapons like a granade launcher and an AK47 it's a class game. Although, I'm only allowed a 15 game, I would have got one of the Grand Theft Autos instead had I been allowed.