Searching for a Super Mario Galaxy 2 WAD file typically refers to the Nintendo Wii file format used for installing channels or system components to the console's internal memory (NAND).
Super Mario Galaxy 2 is the sequel to Super Mario Galaxy, and it continues the innovative and critically acclaimed gameplay that defined its predecessor. The game's development was led by Shigeru Miyamoto and Koichi Sugiyama, and it was released to widespread critical acclaim. The game's popularity and the creativity of its fans have led to the creation of numerous WAD files, which are used to modify or extend the game.
: These are installer packages used to add individual channels (like the Homebrew Channel or Netflix) or system components (IOS) to the Wii menu.
are originally stored in or WBFS formats, which are disc image files.