Mount&Blade and Mount&Blade: Warband are two of my favourite games of all time, one of the best experinces you will ever have hands down, I would say the same for Mount&Blade: FIre&Sword, but it is just not as appealing due to the time frame, with gunpowder been introduced.
But I would highly suggest getting all three, due to there pure enjoyment, Fantastic games, and it's one of those games you can really get into and feel like you have an importiant role to play.
The game by itself is utterly amazing, but has a huge adventige due to the talented modders that make equally amazing changes to the game to give you more challangers, and more roles, and quests and much more.
The Game-The Modders, they both go hand in hand to give you the most intense and extroadinary vibe you will ever experince.
Do not overlook my playtime, for I played this game long before i ever got it on Steam, I would say i have easly put over 100+ hours into this game alone, not counting The other two :).