gamescom 2014: Far Cry 4 Keys to Kyrat allows your PSN friends to play the co-op for 2 hours
Far Cry 4 got some gamescom 2014 stage time at the Sony Press Conference, and we were able to learn more about the country of Kyrat. While it's nice to learn about the country of Far Cry 4 in the video, the more exciting announcement were the Keys to Kyrat.
You can invite a friend to join you in the open world. Keys to Kyrat allows you to bring in anyone even if they don't own the game. Buy the game on PS4 and you get 10 keys to Kyrat, which you can give to any of your PSN friends. Your friends can then play the co-op with you for two hours.