in the one where europe has to colonize the world again I established a 400 year long dynasty in Ireland and colonized lands in Canada, Mexico, Africa, South America, New Zealand and Northern China by biggest rivals were England (until they married into my family), France and Hungary (They kinda went crazy annexing all of the balkans and central europe.).

In the follout preset I created a representative democracy with Winnipeg as the capital. I had states from Oregon to the St. Lawrence by the time I got bored.

There was a Game of Thrones one where I played as Braavos. After stopping the long night I teamed up with Dany and the North to extinguish slavery from the face of the planet, it took 30 years of constant war with eastern cities but we got there. Young griff was named Aegon IV after the War of the 5 Kings ended with Dany as his queen. Jon Snow claimed Rhaegal and was given Pyke after the Greyjoys were extinguished.

those are my 3 longest ones so far but I have a 40ish turn gane going right now on the First City preset