Cemu cannot run raw, encrypted files. You must provide the decryption key. When you load a game, Cemu looks for a keys.txt file. It matches the Title ID of the game (e.g., 00050000101C9300 for Breath of the Wild ) with the specific Title Key. If the key matches, Cemu decrypts the game on-the-fly into your RAM.
Nintendo aggressively pursues any distribution of title keys because they are technically "copyright circumvention devices" under the DMCA. The keys themselves are not copyrighted, but the method of obtaining them (by bypassing encryption) is illegal in many regions. There are no "exclusive" safe keys—only ones that haven't been DMCA'd yet. cemu wii u title keys exclusive
Open the text file and enter the key using the format: [Title Key] # [Game Name] . Cemu cannot run raw, encrypted files
Legally, these keys should be dumped from your own Wii U console. However, many users search for online databases to find specific keys for their games: EmuDeck Wiki : Sites like and various GitHub Gists It matches the Title ID of the game (e