/Debug

/Debug is a directory in both Super Mario Galaxy games. While empty in the released builds, it most likely contained files up until their removal during the preparation of the retail builds. This directory is not present at all in the Nvidia Shield release or the Super Mario 3D All-Stars build.

Possible contents

In the original version of Super Mario 3D All-Stars, two archives with identical content, DEBUG.arc and DEBUG.zst, exist in /StationedData/. These archives contain several files as documented below. It is unlikely that these files had any special relevance to the developers of Super Mario 3D All-Stars, meaning that they were likely leftover by the original developers, and may be what was in /Debug before being cleared.