itch.io

Cannot give you my program (Honestly it's finicky as heck as I made it long ago when my coding skills were less than they are now. But on your pc  here is a link on how to use a rpa unpacker program https://www.youtube.com/watch?v=lR0ClSGaffI The video has a link in the description where you can get the program itself I've tried their version as well and it works like a treat.

Hope that helps ya in the long run of unpacking those rpa files to get to the goodies inside.