https://wccftech.com/the-last-of-us-part-ii-four-million-sold/

Sony and Naughty Dog have released a statement confirming the sales numbers for The Last of Us Part II and they're among the best of any PlayStation exclusive to date. Surpassing more than 4 million copies sold in its first three days (June 19-21), The Last of Us Part II is now the fastest selling first-party PlayStation 4 exclusive.

Announced via the PlayStation Blog, Neil Druckmann had this to say about the recent success of their followup to 2013's The Last of Us: