It seems like you don’t need an arr like tool for your use case. ARRs are designed to download targets that meet criteria, you’re looking to download everything.
Instead it sounds like you are looking for a way to browse your downloaded games on a GUI like interface to help you pick which ones to install?
Breaking from if you need or need not an ARR; is your use case a GUI that lists your downloaded games and pulls the cards from IGDB.com?