This is so misleading when it comes to PC games. Even Legacy of the Void sold over a million in 24 hours, and Overwatch had a far bigger launch than that did. Guaranteed Overwatch won the month in reality. Its subreddit is already larger than Dota 2's and CS:GO's. The real number will come out when Activision Blizzard posts its next quarterly report, and that number will be massive.