Help! How to see PTCGP apk content .aladin files?

I am trying to get some images of the game PTCGP apk, but all the content is .aladin files and I can't find anything about them.

I know there is a moded version of the game from this website, so I figured you guys might be able to help.

Thanks in advance!

Edit: also, sorry if this is a basic question, I am new to this.