It is important to distinguish between the various versions of these collections:

Is it Legal? The Morality of WAD Files

This is the gray area. Nintendo discontinued the Wii Virtual Console service in 2019. You cannot legally buy Super Mario All-Stars for Wii anymore.

⚠️ Only install WADs from trusted sources. Installing corrupt or region-incompatible WADs can cause system issues.

Super Mario World, released in 1990 for the Super Nintendo Entertainment System (SNES), was a launch title that showcased the console's capabilities. The game follows Mario and Luigi as they journey through Dinosaur Land to rescue Princess Peach from Bowser's clutches. What sets Super Mario World apart from its predecessors is the introduction of Yoshi, a lovable dinosaur that becomes Mario's loyal companion.

For the uninitiated: a WAD is a packaged channel file used on the Wii. Installing one (via homebrew) places a fully functional, bootable game icon directly onto the Wii’s System Menu. And in the late 2000s and early 2010s, a particular ROM hack of the Wii’s Virtual Console—the Japanese-only release of Super Mario Collection (which included SMW)—was repackaged into English, rebuilt, and redistributed as a single, seamless WAD.