You will start the game with a Shipyard, which can build only naval units. There's no base building or resource management in this mod. difficulty to each available player slot. Select any of the 10 available Navy maps, and assign an A.I. opponents trying to destroy your base with hordes of aggressive warships! The Navy Invaders Mod allows you to pit your naval strategic genius against one or more A.I. Act of War: High Treason by Eugen Systems - Navy Invaders mod