Hearthstone as a game has been a runaway success for Blizzard. The combination of simple-to-pick-up, difficult-to-master rules; cards using characters and concepts from their long-running World of Warcraft franchise and the free-to-play model that doesn’t force its real-money options onto the player has meant that the game has a far reach. So far in fact that recently the servers have notched up their 20 millionth player.

In a tweet Blizzard said “Thank you all for joining us in #Hearthstone! We’re going to need a bigger tavern!” The success of the game was helped a lot by the release of its first single–layer expansion Curse of Naxxramas, something I very much enjoyed playing and gave Heathstone its most played week ever during its first few weeks.

Here’s to all 20 million players and let’s hope 50 million isn’t too far off! 😛