I went and played some Halo 3 tonight because I haven't in a while and it feels like its still a brand new game. They are constantly updating it and making new map packs. Ever since it came out, it has almost always been the most played game on xbox live (currently its right behind cod5). How long will this last? Not many new games are coming out soon that will be able to compete with it. I think it will drop down once it gets toward the fall when all the best games come out.