Horizon Zero Dawn sells 7.6 million copies in its first year.

[GribbleGrunger]

JustThatGamer said:
Amazing numbers, really need to give Horizon a try. Also seeing how well this game has done I reckon God of War & The Last of Us 2 will easily sell 10m plus.

If you get it don't forget to pick up the 'Complete' edition which includes the DLC.