Plays inside your own copy of Crusader Kings III, on your device, not in a browser tab. Opens github.com in a new tab.
How to play
Have your own copy of Crusader Kings III installed: the mashup plays inside it.
Download it from its release page on GitHub (it runs on Windows).
Install it as its page says. What it asks for is just below, in the list's words.
Start the game the way its page says: some mashups come with a launcher of their own.
What it asks for
Windows 10/11 64-bit, Crusader Kings III 1.20.x and Bannerlord v1.4.8 owned and run at the same time. Steam is the tested store; GOG and Epic are detected but untested. The installer is unsigned.