In a recent game as the Doux of Krete, the Byzantine emperor acquired a claim on the HRE and pressed it when he was about 65 (I had nothing to do with this). He died of old age, leaving the HRE to some random German (I didn't pay attention), but large chunks of its land were now Byzantine territory. Eventually the Danes seized the HRE, formed the Scandinavian Empire, and at some point (I'm not clear on this) the HRE itself was destroyed, leaving only a bunch of duchies that were, of course, easy pickings for the Mongol horde. Long story short, most of the HRE's territory converted to Tengri, and that region was constantly at war with itself from that moment onward. Good times.
It was the first time I'd ever seen the HRE totally collapse, and also I think the first time I'd ever seen the AI form an empire on its own.
It was the first time I'd ever seen the HRE totally collapse, and also I think the first time I'd ever seen the AI form an empire on its own.