: These are Wii U Raw Disc Images . A WUD is a 1:1 uncompressed dump of a retail Wii U optical disc, which always results in a file size of approximately 23.3 GB , regardless of how much actual data the game uses.
is the go-to open-source emulator that allows you to run most commercial Wii U titles in high resolution. Key File Formats for Wii U Games File Format Description Recommended.
Hacked Wii U consoles (using Haxchi or Tiramisu) can load ISOs from USB hard drives, preserving the original disc drive.
The world of sits at a fascinating crossroads: powerful emulation, passionate preservation, and strict legality. For the hobbyist who owns a collection of discs, dumping them to ISO files unlocks the best way to play—whether on a Steam Deck, a gaming PC with Cemu, or the original hardware with a USB drive.