All Under Heaven expansion launches, bringing the Crusader Kings III medieval grand strategy game to new heights on Linux, Steam Deck, Mac, and Windows PC. All of this comes from the brilliant minds at Paradox Development Studio. Which you can now find on Steam.
Crusader Kings III just got its biggest, boldest expansion yet, and it’s ready to launch us deep into the stormy history of East and Southeast Asia. Say hello to All Under Heaven expansion, an absolute beast of an update that throws open the gates to China, Japan, and Southeast Asia. So we’re not just talking a few new mechanics here. We’re talking thousands of new provinces, brand-new characters, and also the chance to rule empires that shaped half the world’s history.
If you thought Crusader Kings III was already intense on Linux and Steam Deck, this game expansion kicks it into overdrive. For the first time ever, you can climb the ranks of Imperial China. Due to rise through Japan’s tangled web of samurai and court intrigue, or declare yourself a living god in Southeast Asia. This isn’t just another add-on, it’s a massive new stage for your dynasty’s drama.
China: The Mandate of Heaven
Here’s where the All Under Heaven expansion gets really dramatic. Rule China and you’re not just managing vassals and wars, since you’re playing with the Mandate of Heaven itself.
Power launches in waves, like a storm. One moment you’re at the peak of stability, and the next, the dynastic cycle drags the empire into chaos. You’ll also need to outmaneuver rivals in the Celestial bureaucracy, ace the Imperial Examinations, and hoard enough gold in the Imperial Treasury to keep disasters (and enemies) at bay. It’s politics on steroids, with the kind of high-stakes tension only Crusader Kings can deliver.
Japan: Rise of the Shogunate
If you’ve ever dreamed of commanding samurai under your banner, this is your moment. Japan in All Under Heaven expansion throws you straight into the clash of honour, betrayal, and also ambition.
Pick your path: unite the houses as Shogun, manipulate the court as a cunning Kampaku regent. Or maybe you are due to restore glory to the Emperor and claim divine right. Every alliance, duel, and scandal shapes your destiny here. It’s not just strategy, it’s a samurai drama where you write the script.
All Under Heaven expansion Out Now
Southeast Asia: God-Kings of the Mandala
Head south and you enter the world of god-kings and temple empires. Rule as a Devaraja, the divine monarch, pulling tributary states into your orbit like a cosmic sun. Tribute missions, spiritual rituals, and Mandala politics create a unique rhythm unlike anything in Crusader Kings before. Add in the Silk Road trade routes and new historical bookmarks. Since this region feels alive with wealth, danger, and opportunity.
A Whole New Map of Madness
Beyond new governments and titles, the All Under Heaven expansion is full of flavor and history. New throne rooms, cultural traditions, and legendary characters are waiting to test your skill and storytelling chops. The Silk Road connects the wealth of Asia to the wider world, making even distant rulers feel its pull. Whether you’re in Europe or the heart of China, this expansion changes everything.
And the best part? It runs beautifully on Linux, Mac, Windows, and Steam Deck. No excuses, wherever you game, you can dive straight in.
All Under Heaven expansion – Final Word
Crusader Kings III: All Under Heaven game expansion launches at $29.99 USD / £24.99 / €29.99 on Steam. Or included in the Chapter IV expansion pass if you’ve already got it locked in.
So, are you ready to claim the Mandate of Heaven, rise as Shogun, or rule as a god-king? History’s waiting, and in Crusader Kings III, it’s never been this dramatic on Linux and Steam Deck.