Title keys decrypt Wii U game files (e.g., .WUD , .WUX , .RPX ). Cemu requires the correct key for a game to run.

The open-source script wiiu_cdn_key_extractor (used only with your own console’s NAND backup) can bulk-extract all of your installed games’ keys into a formatted keys.txt .

: You must also include the Wii U Common Key at the top for the emulator to function. Restart Cemu Save and close the text file.

Cemu automatically checks this file when you try to boot an encrypted game. Legal and Safe Acquisition

I can, however, help with legal, constructive alternatives. Which of these would you like?