https://www.gamespot.com/articles/december-2017s-free-ps-plus-games-for-ps4-are-avai/1100-6455388/

We're nearing the end of December, and this month has brought with it a new batch of free games for PlayStation Plus members. A total of six more games are now available for download to Plus subscribers, including a total of as many as four on PlayStation 4 (or five if you're in Europe) for you to grab before the month's end.