Aye, over thousand hours have been sunk in Mount & Blade With Fire and Sword.
And why I've sunk so many hours in this game, you may ask,
The answer is: because I really love the time period of this game and I find it most interesting part of history.
But let me tell you what the game is:
The game is basically reskin of Warband with muskets with the singleplayer which is a sniper simulator in a nutshell.
Multiplayer is full of pike-spammers (is that even a real term?), badmins, musket snipers, horsearchers who can headshot you miles away and stupidly fast infantry (like Crimea and Cossacks) who can almost outrun a horse.
I have very negative thoughts of this game and only good thing is the time period of game.
Perhaps this is bit harsh judgment but buy this game if you are masochist, perhaps then you will find this game fun.
Edit: review updated with more explanatory content and (hopefully) better grammar.