My gameplay is by far the most volatile I ever played.
First started as a Hungarian count(of Pest), then 20 years into the game my liege grants me Duchy of Pest which includes two more fiefs other than my own and life is looking great. Then civil war breaks out and I had to choose a side. Greedy as I was, I sided with the rebels, whom lost 5 years later. Luckily, no consequences involved me. Later on, I marry the daughter of a duke who has a claim on the Croatian crown, and it turns out my bet was pretty accurate as he declared war on his liege. He called me to arms and the Croatian my old friend King got pwned. Newly reinstated king of Croatia dies and had no male heir, so my wife becomes Queen of Croatia and since it was no matrimonial marriage, male heirs are prioritized.
Then for some reason, she loses the crown of Croatia and instead becomes Queen of Poland, which I don't mind since it was a much bigger faction. My only annoyance was that she refused to die and lived to be 76 years old while as her husband, my current character died at 63. My heir Konrád II wouldn't inherit the crown until he was 50, talk about a fucking hag who refuses to die.
Anyway, right now I'm at A.D 1268 fighting Croatia once again for its crown, also newly acquired the crown of Lithuania so that makes me the King of Poland and Lithuania. I could usurp crown of Finland since I have enough regions, but I could care less about those horseloving pagans.