Build a new kingdom high in the mountains after the valleys have become uninhabitable. In the campaign and sandbox modes, you establish cities on different mountain ranges, each with its own distribution of resources, vegetation, and climatic conditions. The individual settlements are connected through trade, and you can return to them, further modify them, and adapt their production to current needs.
Every mountain is a unique logistical challenge. Build roads, bridges, and tunnels for the safe transport of materials across canyons, rivers, and steep slopes. Optimize supply chains using higher-quality road surfaces, vertical transportation, and useful yaks. Develop agriculture in forested areas, raise animals, and extract valuable resources near glaciers.
Also prepare for devastating avalanches. Reforest critical areas, build protective barriers, redirect snow masses, and trigger controlled avalanches when necessary. If your city withstands the harsh conditions, you can conquer the mountain summit and build a monumental celestial temple.