: You can independently set the Audio , Subtitles , and Interface languages.
: Unlike the official Steam or GOG versions where you use the game client, CODEX users often need to edit the steam_emu.ini goggame-XXXX.info files to change the value from "english" to their desired choice. Performance & Compatibility Completeness cyberpunk 2077 language packcodex link
Once the files are downloaded, you still need to activate them: Launch the game to the (you cannot change audio while actively in a save file). Subtitles/Interface to your preference. A Note on "CODEX" and Repacks : You can independently set the Audio ,
Right-click the game in Steam (Properties →right arrow Installed Files →right arrow Verify integrity) or GOG (Manage Installation →right arrow Subtitles/Interface to your preference
Manual injection of external language packs can break the script compiler in REDengine, preventing the game from launching entirely. How to Download Language Packs Officially (For Free)