It's crucial to consider the following:
If you are using a legacy homebrew setup, allows you to run Super Mario 3D World directly from an SD card. Super Mario 3D World WII U ISO -Loadiine- -USA ...
If you are setting this up for Loadiine, here are the typical details associated with the USA release to ensure you have the correct files: Super Mario 3D World WII U ISO -
Unlike the Nintendo Switch or older consoles where a simple ISO file is the standard, Wii U homebrew traditionally utilized a specific format for loading games from an SD card. No optical disc drive access required – Loadiine
[Title] [ID]/ |-- code/ |-- app.xml |-- cos.xml |-- rpx (executable file) |-- content/ |-- (all game assets, sound, levels) |-- meta/ |-- icon.png |-- meta.xml