Copy and paste the following template into a new text file named keys.txt and place it in your (where Cemu.exe is located).
The Cemu Emulator is the premier software for playing Wii U games on your PC. However, to boot retail games, backups, and system applications, Cemu requires a specific configuration file named keys.txt . Without this file properly configured, you will encounter the infamous "This game requires a Wii U console unique key to be decrypted" error.
Ensure your file isn't accidentally named keys.txt.txt . Turn on "File name extensions" in Windows Explorer to verify.
The keys.txt file places Cemu in a precarious legal position. Under the DMCA’s anti-circumvention provisions, distributing software that is primarily designed to bypass access controls (like the Wii U’s encryption) can be illegal. However, the creators of Cemu cleverly navigate this by making the emulator a neutral tool: it requires the keys but does not provide them. This is analogous to a lockpick manufacturer selling picks—the tool is legal; its use on a lock you do not own is not. cemu emulator keys.txt
Downloading this file is technically software piracy/copyright infringement. Nintendo has historically been very protective of their IP, and they are aggressive about issuing DMCA takedowns for sites hosting these keys.
A: Yes. keys.txt contains title keys and common keys. otp.bin and seeprom.bin are console-specific dumps required for online play and certain DRM checks. You do not need otp.bin to play most single-player games, only a valid keys.txt .
Copying and pasting keys from websites or text documents can sometimes accidentally introduce leading spaces, trailing spaces, or hidden formatting characters. Copy and paste the following template into a
Happy emulating
Use the # symbol to add comments, such as the game name, so you can keep track of your library. Anything written after # is ignored by the emulator.
It is important to note that the Cemu developers cannot and will not include these keys with the emulator. Because the keys are copyrighted Nintendo data, providing them with the emulator would be illegal. Therefore, setting up keys.txt is a step left entirely to the user. Without this file properly configured, you will encounter
If you've used WUDump to dump your games, the tool provides keys in binary form. Cemu expects the hex character representations of those bytes. You can convert them using a hex editor like HxD. On Windows, you can also use a PowerShell command: powershell -c "((gc game.key -encoding byte)|%$_.tostring('X2')) -join ''" .
The keys.txt file is a foundational, but increasingly outdated, part of the Cemu experience. For those running older or encrypted game dumps, it remains an essential tool. The process is simple: get the keys legally from your console, paste them into a text file, and put that file in the proper directory for your specific setup (Windows, Steam Deck, Batocera, etc.).
To obtain the keys.txt file, you'll need to extract the encryption keys from your Wii U console. There are a few methods to do this:
When reviewing the search term , it is important to understand the context of what the file is, why it is searched for, and the legal and safety implications surrounding it.
This format extracts the game into three folders: code , content , and meta . You launch the game by selecting the rpx file inside the code folder.