Creating your own WADs from games you legally purchased is possible but technically complex, involving "nopping" and extracting content from the Wii Shop servers (which are now largely defunct and archived).
(standing for "Where's All the Data?") is a file archive format used by the Wii and Virtual Wii (vWii) to install system components, channels, and games directly to the console's NAND memory. On the Wii U’s vWii, WADs are primarily used to install "Forwarders" (shortcuts to homebrew apps) or legacy WiiWare and Virtual Console titles. Core Functionality WADs act as installers for various types of content: vwii wad
: System "Input/Output Subsystems" that allow the console to communicate with hardware. Custom IOS (cIOS) are often required to run backups or specific homebrew. Installation Process Creating your own WADs from games you legally
