Let's set up Unsimplifier so you can start modding! :)

To use this tool, you need a copy of the Paper Mario: TTYD Remake and either the emulator Ryujinx or a homebrewed Nintendo Switch with Atmosphere in order to create a RomFS dump. (Skip the following step if you already have one)

If you are using Atmosphere, install NXDumpTool and extract a RomFS dump with it.

If you are using Ryujinx, create a folder named "romfs" somewhere in your file system and make sure you have TTYD appearing in Ryujinx's main menu. Right click the game, then select Extract Data > RomFS and select the romfs folder you just created.

Once it is done extracting, open the romfs folder here:

(it will not be uploaded, only stored locally in your browser)