[SYSTEM]: Elias, why are you trying to edit the truth? The English Localization is the only part of this world that isn't encrypted. Read the last chapter.
In simple terms, localization.txt is a configuration file hidden inside Black Ops 3’s game directory. It tells the game engine which language assets to load. While the official Steam or console settings usually handle language switching, PC players (especially those with region-locked or repack versions) often find that the in-game menu refuses to change. Call Of Duty Black Ops 3 English Localization.txt