https://www.gamespot.com/articles/ps4-ps-plus-free-games-of-december-2017-are-availa/1100-6455388/

We're now well into 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).