(Input/Output Subsystems) required for the game to run correctly. Full Game Storage : The actual game data is approximately . To play it on a modded Wii, you typically use a file placed in the folder of your external storage. Key Game Features & Modding
: Some Super Mario Galaxy 2 discs actually contain WAD files internally. These are used to force system updates for specific IOS (Input/Output System) components required to run the game if the console is offline. Key Comparisons: WAD vs. ISO/WBFS Super Mario Galaxy 2 Wad File
Because SMG2 is a massive dual-layer disc (the first dual-layer Wii game), standard injection often fails. Many online WADs are stripped of videos or audio to fit within the 40MB WiiWare limit, or they require a DLC Emulation trick. This is why standalone Super Mario Galaxy 2 WADs are rare and often buggy. (Input/Output Subsystems) required for the game to run