Hearthstone - The Grand Tournament Trailer
And for those who not know what game is Hearthstone: Heroes of Warcraft do
Hearthstone: Heroes of Warcraft is an online collectible card game developed by Blizzard Entertainment . It is free to play with optional purchases to acquire additional cards and access content quicker. The game was announced at the Penny Arcade Expo in March 2013 and released on March 11, 2014. Hearthstone is available on Microsoft Windows and OS X systems and on Windows 8, iOS and Android touchscreen devices. New content for the game involves the addition of new card sets and gameplay, such as from the Goblins vs. Gnomes expansion pack and the Blackrock Mountain adventure.
In early May 2015, there were more than 30 million registered Hearthstone accounts
