, WADs have become the primary method for users to preserve and access digital content. Nintendo Support Core Functionality & Management

Installing a "bad" or corrupted WAD can result in a "banner brick," making your Wii unusable.

allow you to back up your own installed channels into WAD format for archival purposes. System WADs

While they don't host copyrighted games, they provide the best free homebrew WADs (like the Homebrew Channel or open-source media players).

allow you to patch WADs from other regions (e.g., a Japanese game) to run on your local console. Safety & Brick Protection

: A popular, lightweight choice that includes a WAD manager and other system tools. Multi-Mod Manager (MMM)

The only fully legal way to obtain WADs is to (vWii mode) using homebrew tools: