Which Game had the best atmosphere?

Now first, by 'atmosphere' I mean just the general outlook of the game - for example, the setting. How does the setting in a video game appeal to you? Is there a video game where you felt more, say, 'relaxed', or feel a sense of epicness like, 'oh GODS this scene is epic I must do stuff!'

Then there's the characters. Which game do you think, protrays the best feelings in terms of characters and their interactions with each other and their own game world?

There's other factors like pacing, like, which game had the best pacing for you, mood, tone, and of course music.

Now, form all these factors, it stands to reason that nobody can easily choose one answer for this, as there are so many different types of worlds and environments presented within those worlds across so many different types of games that choosing one seems unfair, but still, if you had to choose, which game, or games, provided the best atmosphere for you?