Blizzard has released the first major update to Hearthstone – single-user mode called “The Curse of Naxxramas.” Naxxramas – legendary dungeon, appeared in the classic version of World of Warcraft. In Hearthstone Naxxramas is divided into several blocks. Each of those quarters has its own boss. Each of the bosses has its own unique abilities, and to defeat them (especially in heroic mode) you will have to assemble a special deck.
First quarter of Naxxramas was opened on July 23. Second – on July 30. There are five of them in total and they will be opened one per week. The first quarter is free, the rest will have to be bought, 700 gold for each quarter. The reward for completing Naxxramas will be new cards.