Nintendo is notoriously protective. In recent years, they have sued the creators of Switch emulators (Yuzu) for millions. While Cemu moved its codebase to open-source (GPLv3) to protect against immediate takedown, the distribution of Wii U ROMs remains Nintendo's primary target.
If a ROM requires the GamePad screen (e.g., Nintendo Land , Star Fox Zero ), set Cemu to "Separate GamePad view" or use a mobile app like Cemu Companion . wii u rom
These appear as folders containing multiple .app , .h3 , .tik , and .tmd files. This is the format used for digital eShop titles. Nintendo is notoriously protective