It will probably get "Game of the year", which means it was awesome. It is a free roam game where you live and interact in a massive, fictional, middle earth type world. You may choose to do evil, good or a little of both. He will be playing it for a LONG time, lol.
That being said, one of the main parts of the game is liberty oriented. You must choose one of 2 sides. One is the Imperial Empire: They have intergrated themselves and their culture into a land that is not theirs, but that they want for strategical purposes. They have also forbidden the natives from worshiping their own gods and some other rituals. The other side is the liberty side, the Stormcloaks: They are rebelling against the Empire because they want to live their lives the way they choose, not what others choose. Seeing any paralells? Ask your son who he chose and why, it might lead to an interesting discussion.
Or i said way to much and you wanted a shorter answer lol, its a really good game.