Just do the installation again...fixing the permissions maybe easy or extremely hard, depending on how far the problems go. And I don't think you will learn much besides of how the chown command works.
Did you try to install it with Lutris? https://lutris.net/games/age-of-empires-iii/
Just do the installation again...fixing the permissions maybe easy or extremely hard, depending on how far the problems go. And I don't think you will learn much besides of how the chown command works.