If you like Civilization, and love medieval real-time batles, then it's for you!
At first look, it remind a Sid Mayer's Civilization. You have cities, armies and your purpose is to defend and conquer dominations. But the best part is real-time battles. If you seize towns or castles and just fighting with other armies, you can choose the way to fight. You have armies, where might be over thousand units. You have king and royal family, who are the army leaders. You can upgrade your towns, what allows you to create better units and better defences for your cities. Of course there are all, that medieval age can offer - crusades, blague, Mongols, moody popes and much more. My opinion is that is the best war game ever. But it's just my opinion :D