Searching for yields several massive collections. These aren't just random dumps; they are meticulously organized sets:
Think of a WAD as a digital cartridge. Inside that single .wad file is everything the Wii needs to run a classic game: wii virtual console wads archive.org
: Archive.org is user-uploaded. Some collections are incomplete or have duplicates. Check upload date and comments. Searching for yields several massive collections
This is the safer, more accessible route for most modern gamers. wii virtual console wads archive.org