I've been playing this game so much that it is starting to haunt my dreams.
Yesterday, I lost my first duchy (and the county I started in) to Sweden. Had two disastrous wars before I managed to get it back. Also it turns out that at some point someone had gained independence in my realm. I subjugated them and suddenly became king of Novgorod as well as gaining a handful of vassals scattered throughout Europe. My hold on Novgorod is tenuous and I doubt I will be able to hold onto it, when I die the kingdom will go to another due to everyone thinking my good Christian boy is a dirty heathen.
After conquering Iceland, I then started a war with Sweden again to regain my former territory, I think I only succeeded because someone else was at war with them and when they won, I was then at war with them and they were too weak to stop me from taking things back. I'm hoping to conquer the rest of the UK tonight.
See it's addictive. You don't have the one more turn effect it's the one more hour effect.
CK also is easy to pick up, hard to master so it's been the most approachable of the Paradox games.
There's no win condition I've gone from emperor down to duke then count as the new king revoked my titles.
I still won the game with a massive score as my bloodline ruled most of Europe.
All those not heirs married off and failed matrilineal marriages to counts and dukes eventually some if them independently rose to power in places like Russia and Scandinavia.
The fragmentation of the Empire if Britannia just created a heap of smaller kingdoms of my bloodline from Ireland to Spain, Morocco, Egypt, eastern Europe.
Si yeah you can blob but you can still rack up a large score via your bloodline. Just marry your son's off to lonely countesses and duchesses.
Not sure how CK3 deals with your daughters but in CK2 you just invited male heirs to your court and married them off matrilineal to your daughters.
Just one more hour.
I've barely played anything else in the last decade due to Paradox Interactive thanks to CK2, EUIV and Stellaris.
Just checked steam way to many hours combined. CK2 only a thousand hours.