Need To Get A Birthday Gift For My Nephew

My nephew's birthday is coming up, and I know what to get him. I just need to know where can I find ps3 games. I guess I will look online to see if I can order them there and ask my techie friends. My nephew would really like these. He is into games of all sorts. Other than that, I have no clue as to what to get him, so I am glad of this. I think it is hard to buy for men/boys. Buying for girls--easy peasy. But then I am a girl, so that makes it easy.