Similar to Steam, GOG Galaxy handles language files via the installer or the launcher settings.
Sometimes the in-game menu defaults to English and won't switch immediately. Steam users can force the language change through the launcher properties. atomic heart spanish language pack link
Users are strongly advised against downloading standalone "Atomic Heart Spanish Language Pack" executable files (.exe) from third-party file-hosting sites (e.g., Mediafire, Mega, unrelated forums). Similar to Steam, GOG Galaxy handles language files
Fix: The pack installs the files, but you must manually change the language inside the main menu (not the launcher). Sometimes the in-game menu defaults to English and
Technically, you can play Atomic Heart with subtitles only without downloading the 5.2GB voice pack. However, you will miss a lot of contextual clues, enemy callouts, and the surreal humor of NORA (the glove) during combat. The Spanish dubbing is professionally done, with Crisitina Yuste (Spain) and Paco Gámez (Latin America) leading the voice direction.