You no longer need to manage thousands of tiny files in complex folder structures. One game equals one file.
Right-click on the base game entry in the Title Manager list. From the context menu, select "Convert to compressed Wii U archive (.wua)" . This option is only available for Loadiine-format games; encrypted dumps will not have this option.
: WUA is the preferred format for Steam Deck users because it keeps the wua roms wii u
This makes it incredibly efficient and user-friendly.
The safest and most ethical way to obtain Wii U ROMs is to dump them from physical discs that you legally own. By installing custom firmware (like Aroma or Tiramisu) on a physical Wii U console, you can use homebrew tools like dumpling to export your games, updates, and DLC directly to an SD card or USB drive. From there, you can use Cemu to compile them into WUA files. You no longer need to manage thousands of
directly on original Wii U hardware. They are intended for use with Cemu on PC, Android, or devices like the Steam Deck How to Use .wua Files in Cemu Ensure Version Compatibility : You must use Cemu version 1.27.0 (experimental) or higher. Set Game Path : In Cemu, go to Options > General Settings and add the folder containing your files to the "Game Paths".
: Merges thousands of individual files into one single archive, making it much easier to manage your library in front-ends like Space Saving From the context menu, select "Convert to compressed
A single game can consist of tens of thousands of tiny individual files. This makes copying, moving, or deleting games incredibly slow. Furthermore, keeping track of separate folders for the base game, update files, and DLC quickly becomes an organizational nightmare. 2. WUD and WUX (Disc Images)
Fortunately, a file format called (Wii U Archive) solves this exact problem for PC emulation.
Launchers like LaunchBox or Emulation Station can identify a single .wua file instantly, avoiding the "duplicate entry" bugs often caused by separate update folders. How to Create WUA Files
By reducing the number of individual file-read operations the operating system has to perform, Cemu can often index and launch WUA files faster than folder-based versions.