Good
A good mod-like expansion for the M&B masterpiece. I still prefer Pendor overall, but Viking Conquest's story mode is definitely worth playing through. The game itself is more hardcore and realistic than vanilla, so expect more challenge, which is good, but not recommended for newbies to M&B.
Also good in the immersion department. And has naval combat (a tad janky, but it's there and the it's the only implementation in M&B that I know of).