It may be old. But it was designed better. 2, 3 and all the rest are window dressing. They look better. Had a few more weapons for "depth". Which can't be possible with the intro of the battle rifle and smg. Dual weilding was a nice gimmick, but overall they were poorly designed. They just looked prettier. The story was good, but the campaign was a trial in patience on legend, rather than fun. Reach was the closest they had got to having the balance and game design that CE had. 4 isn't really Halo. It's like a Halo alternate dimension. 343 may have been inspired by the series, but they didn't show it as well in their design. All of the sequels multiplayer was a chaotic mess. Not really sk based. You could be the best sniper as far as the game is concerned, and still lose all the time due to silly shit happening. I've played them all, even ODST and Wars, but the best designed one, in my opinion of course, is CE. The fact that people still get together and do Halo CE parties, instead of xbox live, 14 years after its creation has to say something good about it.