: A custom mechanic for handling large-scale civil wars.
: Includes mechanics for dragons, White Walkers, Valyrian steel artifacts, and one-on-one duels. Agot Ck2 6.1
If you are looking for specifically "6.1" content, it likely pertains to these releases: : A custom mechanic for handling large-scale civil wars
: Allows players to start at various points in history, such as Aegon's Conquest, the Dance of Dragons, or Robert's Rebellion. Valyrian steel artifacts