4P FFA
Each player has a minor noble AI that fights for them within their empire. All players have some local events they can trigger to help them in the war. Crossroads island in the center of the map will be important for projecting power. Also, some neutral fortresses on the periphery of the map are up for grabs, in the no-mans-land between the competing realms.
Map pics @ https://imgur.com/gallery/vow9qSZ
