: The most legal way to acquire ROMs is by "ripping" your own physical discs using tools like CleanRip on a modded Wii.
If you don't have a Wii console, you can play ROMs on a PC or high-end mobile device. Nintendo Wii Roms
If your physical Wii's disc drive has failed, you can find on sites like Alibaba or PriceCharting to keep your console functional for ripping discs. : The most legal way to acquire ROMs