Hearthstone’s Whispers of the Old Gods expansion is live

The sound of all those excited Hearthstone’s fans squealing with glee is much louder than a whisper.

The latest expansion for Blizzard’s digital card game is now live. Whispers of the Old Gods adds 134 new cards to Hearthstone. The digital card game market is worth $1.2 billion, and Hearthstone easily leads the field. Joost van Dreunen, analyst at market research firm SuperData Research, told GamesBeat that Hearthstone makes $20 million a month. Expansions like this keep players engaged and spending money on new content. A preorder of 50 packs of Whispers of the Old Gods cards cost players $50, and people can buy more as they hope to open rare minions and spells. The free-to-play game is available on PC, Mac, iOS, and Android devices.