Announcing: The Boomsday Project — Hearthstone — Blizzard News
Hearthstone: The Boomsday Project Preview - Lab Assistants Wanted - Game Informer
Bug: Boom labs puzzle 4 of the last lethal set (Electra) won't load. It just stays stuck like in the screenshot below, I tried reloading a few times. I play on Android,
Hearthstone Guide: All Puzzle Lab Solutions – GameSkinny