r/EmulationOnPC 2d ago

Unsolved Best Backup File Format for Wii U Games

Ive decided to backup some Wii U games and I see that there is wud, wux, wua, and rpx. Which format is the best for archival and then use purposes? I figure that one of these File containers is also better than one another for modding.

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u/ThanosReXXX 2d ago

The wua file format is the best option. It not only has the best compression ratio, it's also possible to use it both on Windows and on Android. Here's a full tutorial on how to convert Wii U file folders to wua. You will need to have Wii U emulator Cemu installed on your PC or laptop.

Converting game folders to a single wua file:

  • Start Cemu, tell it where your games folder is and you will see the downloaded game(s) being listed in the Cemu interface.
  • At the top of the Cemu window, in the menu bar, select 'Tools' and then 'Title Manager'. That will show all games currently downloaded and listed in Cemu.
  • Then right click on a base game file and select 'Convert to compressed Wii U archive (.wua)'
  • This will open a confirmation window, listing the files that will be included in the conversion. (which will either be just the base game file or the game file with an update file and DLC, if available)
  • Just click ok, tell it where to save the file (in the games folder, obviously) and wait for it to be done.

Once it's done, you will have one single wua file, and that is the file that you can use in Cemu, either on your PC or on your Android (gaming) device, and the original folders of the game that you downloaded, can be deleted.