What does it mean to care about another human being? To worry about their hopes and desires, to show concern when they're putting themselves in danger? And when their dreams are in your hands, when their life is hanging in the balance because of you, do you have the strength of character to do what's right?
That's the idea at the heart of Papers, Please. For all that it's a simulator of a border crossing in some imaginary nation, it's really a game about how we treat each other, and about how we react when we have all the power.
It's a game that tries to teach us something, but does it in an entertaining, often harrowing way. If you want to know what sort of person you are, then playing Papers, Please is going to give you a pretty damn good indication.