Blizzard has released images of the new cards set to feature in Curse of Naxxramas: A Hearthstone Adventure.
The first episode of the expansion will be released in The Americas on Tuesday July 22 and a day later on Wednesday July 23 in Europe.
Naxxramas - the first single-player campaign in Hearthstone - will give players access to a series of increasingly challenging boss fights, along with new cards and a new game board. The adventure will be divided into five wings, each home to multiple bosses.
Blizzard will release one wing per week in the following order: Arachnid Quarter, Plague Quarter, Military Quarter, Construct Quarter, and Frostwyrm Lair.
Each wing will cost $6.99/£4.99 or 700 in-game gold, which can be earned without spending real money by completing various challenges. However, the first wing, the Arachnid Quarter, will be free to all during its first month of availability as part of a launch period offer.