Thinking about buying it, but a lot of guys have said its pretty much the same as the old liberty city game? Its under £20 in most game shops which is pretty cheap!
Is liberty city stories worth buying?
Not worth it on PS2 as its nowhere near as good as vice city or san andreas, but on psp its great, its not really like the old liberty city game apart from that you drive around the same locations not much else is the same.
I suggest not to buy because it's nearly he same as those on PC and PS2. But If you want to play portably. It worth it. 
