To use a WAD file, your Wii must be "softmodded" with the Homebrew Channel.
Open your WAD manager via the Homebrew Channel, select the file, and choose "Install." new super mario bros wii wad download
Often, what users are actually looking for is a "Forwarder WAD." This doesn't contain the whole game (which is too large for the Wii's system memory) but acts as a shortcut to the game stored on an SD card or USB drive. How to Install a WAD on an Original Wii To use a WAD file, your Wii must
Apps like Wii Mod Lite or YAWMM (Yet Another Wii Mod Manager) are the gold standard. To use a WAD file