Based on common technical issues and community discussions, here are the most likely actions you might need to take:
: The game's .dat files are typically compressed using the Falcom algorithm (falcom_din). File: Xanadu.Next.zip ...
: You may need a tool like quickbms with a specific script to decompress these files before the text becomes readable in a standard hex or text editor. Based on common technical issues and community discussions,
: Extract the contents of the .zip file into your main Xanadu Next installation directory (usually where XANADU.exe is located). File: Xanadu.Next.zip ...
If your goal is to "make a text" (extract dialogue/strings) from the game:
The game is known to have specific text issues, such as unreadable opening credits or corrupted dialogue: