Rebellious vassals captured most of my provinces. The duke of Finland gained half of my provinces and the duke of Norrland captured the other part. So I think the game is pretty much done already.
Sounds like it, ouch.
And what if you'l ask for mobilization via the diplomatic options?
Loyalty only drops if they refuse.
That sounds good but it seems it is incredibly difficult to inherit something especially some important titles. Should I marry the female members of the ruling dynasty (with the same last name)? Assasinations are even more complicated because you can lose you reputation if you will not succeed and the chances are up to 0 if the target is having the same intrigue value as you. Any advices?
1. Marry inheriting daughter to your heir. Their heir will then inherit both. Watch out for your and the other realms' inheritance laws (use the map) though.
Marry your daughter to a king/son, wait till they have a kid, assasinate, might inherit that as well, depending on laws.
2. Murder their spymaster first and then the real target. If you get bad reputation, hand out some titles to reduce it.
I just trying to slowly conquer everything around me not endeavoring for crusading which leads to piety decrease even if my ruler isn't having a crusader trait. Why?
Sometimes my ruler is having a negative prestige. I don't understand why and he continues to lose it thought the description of prestige says that I must gain prestige and have no negative modifiers. What is going on? Is it a glitch?
Err, as far as i remember you get negative piety for not owning a muslim county/not joining the crusade. A crusader trait gives an increase.
Prestige loss usually only happens after a white peace or a lost war. Buildings, traits and unlanded sons do as well. The tooltip info doesnt always give full/satisfying information.
I agree but anyway it is OK if you want to win. And I have no idea how can you win in this game if you are a king of Nubia or a small count somewhere except Ireland. I don't understand from which the scores are depending? Amount of prestige only or something else? Occasionally you can see a huge kingdom having less scores than some duke (especially if you old ruler is finally shoved off).
Is there a score ? I dont recall anything like that, unless you use the DynasticGlory Mod. I dont remember what made the score, but more or less all score (Prestige, piety and probably some thing else) of your dynasty.
Every ruler starts from scratch and needs to build up on prestige and piety again and again.
If you play a small count rely on inheriting, usurping titles and assasinations or conquer some small infidels.
It takes some time if you start as a count to achieve anything and its pretty tough as well. You'll need nerves of steel.
I recommend to read the Beginners Tutorial link which ConjurerDragon posted above and which is stickied on the first page of this forum, just like having a look into Velds stickied "Links to important threads....".
Check those first and then keep asking.
Oh and i'd say, just play the game and dont be afraid of loosing some times, you usually can play on as long as there is a dnasty member (iirc) and reclaim your old lands and rights.
Loosing is part of the game and normal. Just learn by playing or if you like to learn faster, use cheats for learning, but they take the fun away.