Your own saga...

I was playing as Alfred and his Wessex when the king of neighboring Mercia suddenly died. The game gave me two options: either stay out of the succession dispute or stake my somewhat dubious claim to the royal crown. I took a risk, clicked on the second option, and prepared for an unpleasant war with a powerful kingdom, albeit one king poorer. Instead, nothing seemed to happen, the game didn't react to my choice, and it was only later that I noticed that Mercia had become my vassal state.
In another situation, as a Viking king from Dublin, I sent a raiding expedition to the French shores. After a few rounds, a series of choices opened up before me as if cut out of a gamebook or text adventure game. Should my ships go by river or by sea? Should they attack Orleans, or continue on? Should they sack the city, or occupy it? Interesting dilemmas, but undermined by one fundamental problem: the game gave me no information to work with at the time. How big is Orleans' garrison? How many men do we have? What can we gain and lose by attacking? My decisions relied more on guesses about what the game probably thinks than on actual strategic thinking.
Other choices cause some regions to break away from their masters, and many kingdoms can use story (or perhaps more accurately, historical) events to expand their territory. For example, the Welsh Gwined can unite all its tribesmen into a large state unit and set off on an expedition against the advancing Anglo-Saxons. At other times, Vikings from East Anglia and Northumbria will fight for the title of the harshest bearded conqueror.

Very nice Britain, very bad user interface. The historical events system sometimes hits the mark, sometimes goes completely wrong. And you won't find any great originality here either. Good fun for Viking lovers. 60%

how the ♥♥♥♥ the enemy is going to attack my garrisoned army in my own settlement yet they get the advantage of starting within the settlement, how the poes can you explain that ♥♥♥♥

It is good