Note: If you want the Zombies Chronicles DLC (the 8 remastered maps), the PROPHET base release does not contain it. You would need the "v88" update or the "Reloaded" release that came later.
Why does this matter? For non-English speakers in 2015, official localized versions of Call of Duty were often delayed or region-locked. The PROPHET release democratized access, allowing a player in Warsaw or Sao Paulo to experience the Zombies campaign "Shadows of Evil" in their native tongue on day zero. Call.of.Duty.Black.Ops.III.MULTi10-PROPHET
The release usually comes as a large ISO file. Note: If you want the Zombies Chronicles DLC