Hearts of Iron IV (v1.19.3.0 + Co-op)

Design your own ships and refit older models. Alter your convoy routes to avoid hungry wolf packs. Embrace or circumvent naval treaties and deal with the diplomatic consequences. Man the Guns also introduces new alternate history paths for the major democracies of the war and gives the freedom-loving nations of the world more freedom to act before the war forces their hand. Communist National Focus Path: Spark a socialist revolution to replace the failed middle path, joining the Comintern or uniting the region under your own federation; whether through radical struggle or moderate reform.