The third clone of the Halo trilogy. Pretty much the same as the first two but a new weapon or two and a couple dozen new maps. The only reason why someone would buy this is because they are drawn into the ads that say how it's going to be the greatest game ever and any other game is shit compared to it.
Person 1:"Dude i'm gonna go buy Halo 3 when it comes out wanna come watch me buy it?"
Person 2:"You already own Halo 1 and Halo 2 why not just glue them together and put them in your Xbox 360?"
Person 1:"Because those two are shit compared to Halo 3. Did you know Halo 3 has one new weapon and thirty-six hundred new maps."
Person 1:"Get the Hell outta my site I never wanna see you again you fucking retard."