I wasn’t sure if this was just an error on 343’s part, or perhaps it’s maybe because some of the games were pre-343, and mainly something that was during Bungie days, but I have played all the Halo games except Fireteam Raven, and Spartan Strike, however, the site is claiming I haven’t played Halo 3, Halo 3: ODST, Halo: Reach, or Halo: Spartan Assault. It’s not that big of a deal, but I figured I’d mention it, as I like to have that to be able to see, but nevertheless, I myself at the end of the day, know that I have played all of those games, if anything else.
I also should mention, not sure if it has been mentioned previously, and maybe a reason was given or not, but Halo Wars (the first one) isn’t even listed, I could of missed it though.