Samurai Warlords

This is actually a mod for Medieval: Total War, which aims to provide something similar to Shogun: Total War. You can even see the similarities, since the game engine is similar in the first place.
The strategic map above looks so much like the one in Shogun: Total War. And the battle map below is also similar. By far, I think it is a very good re-creation of the older Shogun: Total War. However, instead of having 4 turns a year, this mod follows the 1 turn per year system in Medieval: Total War. So be prepared for a few generations of succession before completing the campaign.