Jut got a free HZD theme for obtaining the Platinum trophy even though I've never played the game

http://ift.tt/2sTHddO

Roughly translates to:

Congratulations Hunter, you archived the platinum trophy for Horizon Zero Dawn. As a reward, the oldest gifts you this theme for your PlayStation.

Like I said, I've never played the game, even though I wanted to. Don't know why I got it, haven't seen the theme yet. Gonna check it out later. Redeemed the Code already though.