Found 11th Nov 2013
I received an email from Amazon claiming they are doing a buy 2 get 1 free. When I tried the code it said it was not valid. I then contact Amazon via chat and they said it was not for the UK amazon just the US one. I then phoned them to see if there was anyway they could process this promotion for me. The nice lady went away and asked about this for me, when she cam back she informed me I received the email early and the promotion will start on the 12th of November. So as far as I was told you will be able to receive a free PS4 game when buying 2 starting tomorrow. I am not sure when the promotion will end.