PlayStation 4 Games - Buy 2 Get 1 Promo on Amazon.
Was already a huge amazon fanboy before this. But now?!
If you have ordered 1-2 PS4 games from amazon, check your spam filter. If (like me) you ordered 2, you should have a code for a free game. And if you ordered one, you should have a different code that allows you to buy another game, and get the 3rd for free. And those codes expire on the 16th, so don't delay.
And if you've not ordered any yet, you can get in on the deal tomorrow (note the time, it's a limited window of 4 hours).