Suit up, Spartans: after more than a decade of waiting, Halo 2 will finally make its way to PC. Dubbed Halo 2: Anniversary, the game comes as part of the broader Master Chief Collection, which offers six Halo games in one package, including the first four numbered entries, Reach, and 3: ODST.
Halo: The Master Chief Collection first came to the Xbox One in 2014, prior to the release of Halo 5: Guardians, with all six games included from the start. Halo 2: Anniversary features a complete redesign of its audio and cutscenes to align with modern standards, similar to the Halo: Combat Evolved anniversary from 2011, which is also a part of the Master Chief Collection.
For the PC release, developer 343 Industries decided to release the Halo games piecemeal, since each has to be updated for PC. Halo 2 is the third game to be added to the PC version of the Master Chief Collection, following in the wake of Reach and the original Combat Evolved. According to the official Xbox site, the remaining three entries in the PC collection will be added later in 2020, finishing with Halo 4.
Source: GameSpot