Bladestorm is a good game that could be overlooked as its made by the same people who made the Dynasty Warriors series.
Sure, it shares some similar features, like the huge armies fighting and large battlefields where you kill 100's of foes in a single battle, but this game is something very differant.
First of all, there are no real characters to choose from. While you may fight alongside the likes of the Black Prince or Joan de Arc, you will have to create you own character who works as a mercenary, fighting for whichever side you choose.
Secondly, you are not a one-man killing machine, here you have a range of differant units you can control from archers and cavelry to swords and spearmen.
Each unit has its strengths and weaknesses against other types, forcing you to change the unit you are controlling in order to defeat certain forces.
Bladestorm is largely a strategy-based game, as you switch units to keep an advantage against your opponenets, you must also capture various bases to help reduce the enemies numbers and add more units to your own forces.
As it isnt a simple 'run around and kill everything' game like dynasty warriors is, it takes alot of time and patience to go through, its not something for the more casual party or those that prefere less complex action.
Still, it is a fun game, and worth picking up if you have ever enjoyed the kessen series or other strategy games.