One of the best PlayStation 4 games is just $20 right now

"Horizon Zero Dawn" is one of the best games of 2017, and a good reason to own a PlayStation 4 unto itself.

Just look at this:

If you haven't already played the excellent, massive third-person action game, now's a great time to pick it up: It's just $20 on Amazon and Best Buy. That is an absurdly good price for such a great game.

So, what's the game about? Here's the skinny.