It was a big day for Halo fans today as four key games in the legendary series joined the backwards compatibility on the Xbox One. Halo CE Anniversary, Halo 3, Halo 3 ODST, and Halo 4 are now playable on the platform intact with their original multiplayer settings and playlists. This means that fans of specific modes in these games, such as Halo 4 BTB!, can now play them at will. I have to say, today was a good day.