https://store.steampowered.com/app/3315510/Crusader_Kings_III_Khans_of_the_Steppe/
The winds sweep across the Great Steppe as you look over your people, preparing to ride toward the horizon in search of greener pastures, lands to conquer, and new treasures to claim. In Khans of the Steppe, the second Core Expansion for Crusader Kings III, the nomadic life takes center stage, offering a rich tapestry of new challenges and opportunities. Become — or defeat — the Great Khan as you harness the unique powers of the nomads, navigate the ever-changing Steppe Seasons, and bend the world to your will.
Sorry, but I must (most sorry I couldn't find the 10 hour loop)