Firewatch
Over the past few days, I've been hearing a lot about this game called Firewatch. It's an independently developed game from a small San Francisco-based team called Campo Santo. I suspect that one of the main reasons why this game has gotten so much press is because it looks amazing. Sure, reviews for it are pretty high as well in terms of gameplay value, but the real art here is in the artwork itself -- vast vistas made in simple rainbow hues that give both atmosphere and believability.
The game is currently $19.99 on Steam. It's a choose-your-own adventure game that's heavy on the text a bit but incredibly fun from what I've read. If you've played it, let me know your comments below.