Well this is probably the best hand-held game I've played so far.
The games main campaign is about 15 hours but it's pretty challenging once the missions require you to kill people. Of course that's because the aiming is still half destroyed. But we've been dealing with that since Grand Theft Auto 3 and have been enjoying the game since then.
The value of this game is extraordinary. I've played the game about 40 hours and all I got the completed meter to was 41%. This is after I completed a lot of the optional missions. It's just that there are so many things to collect and odd-jobs to do on the side.
Other than that. This game IS the Grand Theft Auto we've all grown to love. And that's what makes it so good.