Wii U Roms Internet Archive -

: You can find high-quality "No-Intro" or "Redump" sets, which are verified against databases to ensure the files are perfect, byte-for-byte copies of original retail discs.

: There are large directory listings for retail games like wii-u-retail-nus-usa or Wiiu_Arquivista which contain .wua or NUS format files. wii u roms internet archive

If you prefer the authentic experience, you can use archived files on your physical console. This requires a "homebrewed" system. : Use a FAT32 formatted SD card. : You can find high-quality "No-Intro" or "Redump"