An official announcement has been made by Hearthstone’s official Twitter channel saying that 30 million people have now joined the game. This significant event was achieved directly following the release of the Blackrock Mountain expansion and Hearthstone’s arrival onto iOS and Android.
Although Hearthstone is a free-to-play game and there isn’t any revenue coming from the installation of the game itself, Blizzard is definitely ecstatic about their growth in users. From September 2014 until now, there has been a jump from 20 million players to 30 million. That is very impressive.