This is a known bug, not necessarily a missing file. PCGamingWiki notes that this occurs due to Dolby Surround settings.
Even with the correct , you may encounter problems. Here is how to fix them.
Implementing the language pack is often complicated by the game's broader technical issues on modern hardware: How to fix and play Prototype 2 on PC in 2025
Search for a trusted repository containing the Prototype 2 English Language Pack extraction files (typically hosted on Steam Community Guides or ModDB). The pack generally contains two main file types: Prototype 2 Pc English Language Pack
Video game installers often compress data by stripping out non-essential audio files or grouping regional versions together. This language mix-up usually happens due to:
Ultimate Guide to Downloading and Installing the Prototype 2 PC English Language Pack
Double-click it and change the Value Data to 8 (the universal Windows identifier for English in older Activision titles) or type en-US . Click , close the registry, and launch the game. Troubleshooting Common Audio & Subtitle Issues The Game is in English, but Characters are Mute This is a known bug, not necessarily a missing file
If the Registry method fails because the English files are physically missing from your steamapps\common\Prototype 2 folder, you must manually add them.
Some versions require a quick text edit to force the engine to read the new language assets.
Prototype 2 is an action-packed, open-world adventure that is not to be missed. With the English language pack for PC, gamers can experience the game in their native language, with fully translated text and subtitles. Whether you're a fan of the series or just looking for a new game to play, Prototype 2 is a great choice. So why wait? Download the English language pack and start playing today! Here is how to fix them
Navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Activision\Prototype 2 Look for a string value named .
This is the most effective way to force the game to launch in English. , and hit Enter. Navigate to the following path:
If the files are missing, you must download the English versions and place them in the game directory: : Locate your game folder, typically: C:\Program Files (x86)\Steam\steamapps\common\Prototype 2 : Replace the existing files with those from a verified English Language File Download 2. Registry Editor Tweak