If you are playing on a physical Wii using USB Loader GX or CFG USB Loader, your cIOS (custom IOS) is likely the culprit. Mario Party 8 requires specific slots.
: USB loaders require a specific folder and file structure to recognize the game. Folder Name : Mario Party 8 [RM8E01] File Name : RM8E01.wbfs (placed inside that folder) mario party 8 wii ntscwbfs fix
: Your Wii system settings must be set to 16:9, and any "Widescreen Hack" settings in your loader (like USB Loader GX) should be disabled to avoid conflicts with the Gecko code. 2. The WBFS/ISO Black Screen Fix If you are playing on a physical Wii