About: With All Under Heaven, the vast and dynamic history of Asia comes to life. Claim the Mandate of Heaven The world of Crusader Kings III is expanding. In All Under Heaven – the game’s fourth Major Expansion – the map extends to Asia to include the rich and storied lands of China, Japan, and Southeast Asia.
Sources:
Release: Crusader Kings III: All Under Heaven (DLC) is listed as released on Steam.
Release date: 28 Oct, 2025
Source: Steam store page
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