Gamer 2.0: Nearly 2 years after its release, Halo 3 is finally seeing some expansion content as far as the campaign is concerned. However, the content is a stand-alone product with loose ties to its brethren, so it is not your standard expansion. And so it gets the name Halo 3: ODST. As a two-disc package, the game offers up a new plot line with a new hero, along with a brand new type of multiplayer. Its second disc has the lasting power of Halo 3: the entire Halo 3 multiplayer experience.