Archive.org Wii U Collection Direct

Ethically, you should only download titles you have physically purchased. The argument is that you are "creating a backup" of your own disc, which is legal in some jurisdictions (like the US under the DMCA’s temporary exemption for obsolete machines).

: Users frequently note that direct downloads from Archive.org can be slow. Using the provided torrent files or a download manager is often recommended for the best experience. Archive.org Wii U Collection

While rare, some uploaders inject spyware or coin miners into "Wii U Hack packs." Always: Ethically, you should only download titles you have