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Hearthstone’s next expansion is The Boomsday Project

Puzzle labs and giant mechs await players who intern with Dr. Boom

Ryan Gilliam (he/him) has worked at Polygon for nearly seven years. He primarily spends his time writing guides for massively popular games like Diablo 4 & Destiny 2.

Dr. Boom — the star of one of Hearthstone’s most famous cards — is now the subject of the game’s newest expansion. The Boomsday Project will see Dr. Boom and his band of mischievous scientists unleash a whole slew of terrible experiments into the world of Hearthstone on Aug. 7.

The Boomsday Project introduces 135 new cards to Hearthstone, including nine new Legendary Spells. As usual, players will be able to pre-purchase a 50-pack bundle of the new cards and an exclusive card back for $49.99. This time around, players will also be able to buy an 80-pack bundle for $79.99 that comes with the Mecha-Jaraxxus Warlock Hero as well.

The new keyword for this expansion is “Magnetic,” and it pertains strictly to Mech minions. When a Magnetic minion is played with a Mech minion, they combine attack, health and abilities. Essentially, each Magnetic mech will be one piece of a Power Rangers Megazord — just waiting to create the ultimate Mech minion.

The new Spell effect is called Project, and benefits both players equally. One of the new Projects we know about is called the Biology Project, and it causes each player to gain two mana crystals. The goal is to build your deck around the different Project cards, so you can take advantage of your or your opponent’s spell.

Omega cards are new spells that offer a special boost if their caster already has 10 mana crystals at their disposal. Now, players who love to bide their time have some powerful strategies to unfold in their final hour of need.

Hearthstone: The Boomsday Project - Mecha-Jaraxxus
Mecha-Jaraxxus is the new Warlock Hero players can use as their avatar instead of Gul’Dan if they purchase the 80-pack bundle of The Boomsday Project.
Blizzard Entertainment

As far as single-player content, The Boomsday Project will let players intern with Dr. Boom in The Puzzle Lab. Unlike the dungeon-crawling single-player battles of past expansions, The Puzzle Lab is more like a puzzle game, as the name implies.

Players will progress through a variety of scenarios. Lethal puzzles will ask players to win a game starting from a specific board setup, while Survival puzzles will put players in tough scenarios and ask them to hold out. Those who manage to make it through the 100 different puzzles will face Dr. Boom in a final intern-versus-boss showdown.

The Boomsday Project will be released for Android, iOS, Mac and Windows PC on Aug. 7, with The Puzzle Lab coming a few weeks later on Aug. 21.

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