Generally speaking .bin is a generic extension used for thousands of file formats across computing with nothing in particular linking them up, indeed I can well imagine you have dozens of examples of different formats using the extension .bin right there. It could also be that the devs renamed existing files .bin so it might be that one or more of them is a known format but you are going to have to look at them and see.
It might be that you can extract one or more of those further but .bin itself, even the names and directory names and file sizes, are not that helpful.
Time to have fun with a hex editor.