What does the "WORK" tag actually mean? In the ROM/ISO sharing community, this is a quality assurance marker. A "Working" Mario Kart Wii ISO meets the following criteria:
: Small regional differences exist in the box art, logo designs, and even the placement of items on the title screen. Mario Kart WII ISO -JPN- WORK
You have the file, but it won't boot on your American or European Wii. Here is the fix. What does the "WORK" tag actually mean
If you download the ISO from an archive, do not trust the filename. Verify it: Mario Kart WII ISO -JPN- WORK