This method is only for console users.(XBOX) There is a method where you can pair up with a friend. do the half price technique. If me and my partner are both interested in a game, i will send him 30 dollars over paypal. and he will buy the game and we will both have it. Or he gives me 30 dollars and i will buy it. And we alternate who buys each game.
For the free method, If he wants to buy overwatch he pays the full 60 for it and I get it free, but he may want you to buy infinite warfare in return or another game down the line. Then he will get it free infinte warfare free. The dude im paired with buy tons of games and occasionally we will have the same interest and go half on it.
I believe there is a PS4 method as well.