Speaking with investors Sony's John (Tsuyoshi) Kodera confirmed that God of War has achieved sales in excess of 5 million copies in its first month on the market. We already knew the game was breaking records and it's well on its way to becoming the best-selling exclusive game on the platform (Uncharted 4: A Thief's End), while there are some ways to reach the overall best-seller on PS4 - Grand Theft Auto V.
Thanks, VG247.