For most PC users, the easiest way to make Retro Rewind "work" with your ISO is using the launcher.

If you want to play Retro Rewind on a real Wii without using the original game disc, you must create a .

: If your file is an .nkit.iso , it will likely fail. Convert it back to a standard ISO or WBFS before attempting to patch it.

Place your clean Mario Kart Wii ISO into the builder folder.