I would like to add that the game has many of the great elements of a good Narrativist RPG, organically creating wonderful stories as you play along… people who enjoy telling stories well into the night will absolutely love this game.

About multiplayer, I do not think it would make a lot of sense for CK2. In any case, here is a forum of people playing multiplayer; you could ask them how to start a game or even join one: http://forums.ederon.net/default.aspx?g=posts&t=2684&p=5

Some examples from my games in medieval Iberia:
Story 1: The bloodthirsty hunchback Dwarf
After changing the Succession Laws for my Kingdom of Navarra to Seniority, heirs start dying of “unnatural causes”… After the 3rd murder, my Spymaster informed me that one of my cousins was behind the assassinations… It was too difficult to imprison him, so I did not do anything about it… two murders later he was first in succession and the murders stopped for the last 4 years of my benign reign… Now this guy was not only a kin-slayer but also a hunchback and a dwarf so everybody hated him and less than a month after he became king, all the Nobles rebelled… a bloody and costly year-long ensued during which the King of France helped himself to some of my counties… after a year of fighting I managed to stop the rebellion: almost all my Counts and Dukes were now in jail, and I was ready to start improving again my kingdom, but only 20 days after defeating the last rebellious noble, the character was assassinated… his Spymaster, who also hated the King apparently “failed” to see the pot coming…

Story 2: The Cruel Queen
One of my characters turned out to be gay and to have only daughters, so all Nobles of the kingdom saw him as weak… To avoid a full scale rebellion, I had to give the nobles a lot of power. When he died, the eldest daughter became Queen, but I soon saw that the nobles were too powerful and would probably rebel… The only option I saw was to imprison them all, including her two sisters… Luckily for her, the imprisonment attempts were a success, and soon all the main nobles were in jail, unable to start a rebellion… That did not prevent the character from receiving the title of “The Cruel” and being poisoned less than a year after filling her dungeons with blue blood…

I just wish it would hurry up and go on sale!