Mount and Blade

When I first played this, I thought "Boring". But fortunately I played a little more and was hooked.
The towns are not where the fun is. It is the battlefields and castle sieges. Nothing feels better than a well fed army at your back.

https://www.gog.com/game/mount_blade
https://en.wikipedia.org/wiki/Mount_%26_Blade

Pros: The best medieval battles I have ever experienced. AI is not 100% but decent. Mount and Blade Warband is a 'slight' step up.

Cons: Wrists get sore from hours upon hours of battling. No real story line.