Hearthstone Reaches 50 Million Players, Up 10 Million in Five Months

World of Warcraft developer Blizzard Entertainment's free-to-play card game Hearthstone: Heroes of Warcraft has reached a new player milestone. It was announced this week that the game has surpassed 50 million registered players, up from 40 million five months ago, in November 2015.

The figure was mentioned in a press release for Hearthstone's latest expansion, Whispers of the Old Gods, which came out this week. It adds 134 new cards, all of which you can see here in this gallery roundup.

"Whispers of the Old Gods adds an exciting new set of creepy, corrupted cards to Hearthstone," Blizzard cofounder and CEO Mike Morhaime said in a statement. "We can't wait to see how creative players are with the ancient evil of the Old Gods in their hands."

Hearthstone is no doubt a big hit, but Blizzard has not disclosed how much money the game is bringing in through its various microtransactions. Activision Blizzard may announce more details around Hearthstone's business performance next week when it reports earnings for its latest quarter.

Have you check out the Whispers of the Old Gods expansion yet? Let us know in the comments below!