in virtually every country with copyright laws (including the US, EU, Japan, and Australia). Nintendo has aggressively protected its intellectual property for decades.
Searching for is understandable. The game is a classic, and physical media is fading. However, the risks—legal liability from Nintendo, malware from shady sites, and the general unreliability of random ROMs—often outweigh the convenience. Nintendo Wii Rom Download New Super Mario Bros Wii