For players who purchased Call of Duty: Black Ops III in regions like Russia or Eastern Europe, the game is often locked to the local language with no official option to switch to English in the Steam properties. To resolve this, the community has developed a manual workaround involving the replacement of specific system files, primarily the localization.txt The Role of localization.txt
If you are missing the actual English voice and text data (typically found in the files), the localization.txt alone will not work. Steam Users : Right-click the game in your Steam Library Properties , and choose call of duty black ops 3 english localization txt download
Note: Some versions require additional lines like Target=english or Fallback=english . If the above doesn't work, try adding Target=english on a new line. For players who purchased Call of Duty: Black