For players who purchased Call of Duty: Black Ops 3 in regions like Russia or Poland, the game is often "region-locked" to those specific languages with no official in-game menu to switch to English. However, there are verified community workarounds that can make the COD Black Ops 3 English language pack work by manually replacing specific localization files. Official Steam Method (If Available)
This is the million-dollar question. Call of Duty: Black Ops 3 uses Treyarch’s anti-cheat system. Changing language files is not a cheat; it is a client-side cosmetic modification. You are not injecting code or altering gameplay mechanics (damage, speed, etc.). cod black ops 3 english language pack work
Ironically, Black Ops 3 officially supports English, but Steam sometimes forgets to download the files. Before doing anything drastic, try this. For players who purchased Call of Duty: Black
.pak files, though we recommend caution with third-party downloads.