This is a compressed version of a .wud file created to save storage space. It retains the original encryption and requires the exact same keys as a .wud file. Formats That DO NOT REQUIRE Keys
Paste your specific game title keys on the subsequent lines. Save the file ( Ctrl + S ) and close Notepad. Step 3: Test the Game Launch Cemu.exe . Go to and select your .wud or .wux game file. If the keys are correct, the game will boot immediately. How to Get Legitimate Wii U Keys
To legally obtain these keys, you must dump them directly from your own Wii U console. EmuDeck Wiki Wii U Common Key cemu emulator keys.txt
Ensure the key inside matches the specific regional version of your game (e.g., US, EU, JP).
The standard layout inside the notepad file uses the following structure: This is a compressed version of a
Wii U games are digitally encrypted by Nintendo to prevent unauthorized playback. When you dump your legal game copies from a Wii U console to your PC, they often remain in an encrypted format (such as .wud or .wux files). Cemu cannot read these files natively. It requires specific cryptographic keys to unlock the game data on the fly.
This process requires a homebrewed Wii U console. By using homebrew applications like or readdlc , you can extract the system's common key and your games' title keys directly to an SD card or USB drive. Once extracted, you can copy and paste those text strings into your PC's keys.txt file. Save the file ( Ctrl + S ) and close Notepad
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These tools often download keys from public databases. While the tools themselves are not illegal, using them to access unowned games crosses the line into piracy.