Been out of the video game world for a long time and recently blew the dust off of my xbox 360 and renewed my xbox live only to learn that nobody seems to play the games I currently own on live and a lot of the newer ones dont work on 360. Anyone have some suggestions to some first person shooter games that they know are still popular on live that I should look into picking up? I have a few of the old COD games but it seems like most of the lobbys are dead and I would hate to buy some "newer" games only to have the same.