The Puzzle labs have opened their gates and all Hearthstone Players receive 3 card packs from Dr. Bumm's secret laboratory for free.
The Puzzle Labs are the single player adventures of Dr. Bumm's secret laboratory similar to the monsters and treasure hunts of the last expansions. A huge number of Hearthstone puzzles with different conditions await you here. Sometimes you have to find the Lethal Combi, so you have to kill the opposing hero with limited means in this round, or kill all Minions (including yours).
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Similar puzzles have been tinkered with in the community for a long time, now Blizzard has opened its much more extensive version in the game. There is no order to be followed, for example with the Naxxramas extension, you can switch between the individual laboratories and try as much as you want. The apocalypse beckons card backs for passing all challenges.
Here is the official message:
Hearthstone - The Puzzle Lab
The Riddle Lab, the new challenging single player mode from Dr. Bumm's secret laboratory is now live! For a limited time you will receive three free card packs from Dr. Bumm's secret laboratory. Then you can go straight to the puzzle laboratory to help the research directors and assistants from Bumm Labortechnologie to overcome challenging hurdles for their research.
Each laboratory represents one of four different types of puzzles: death zone, mirror image, tabula rasa and survival. In each of them a simple task awaits you at first - a kind of introductory puzzle to familiarize you with the experimental procedures. But every further puzzle becomes much harder! You can approach the puzzle laboratory in any order. So if you get stuck, just stop by another laboratory and continue working there for a while.
