Hearts of Iron IV: Man the Guns expansion feature spotlight by HoI4's game director Dan "Podcat" Lind.
Man the Guns is the 2nd major expansion for Hearts of Iron IV. It was announced on 2018-05-19[1] and was released on 2019-02-28[2]. The expansion coincides with patch 1.6 aka "Ironclad".
Major Alternate Paths: Revive the Old Confederacy as the United States and provoke a new civil war, or hasten decolonization of the British Empire.
Ship Design: Research new components and refit older vessels to take advantage of new knowledge. Outfit your submarines with snorkels for improved stealth.
Admiral Traits and Skills: Tailor and level up your Admirals with new traits and skills.
Governments in Exile: Welcome a government in exile to your democracy, boosting their legitimacy in return for more manpower and elite troops fighting to free their homeland.
Naval Mines: Protect your coasts from invasion or assault with anti-ship mines, or sweep a clear path through enemy mines before the fleet makes the big push.
Shipping route controls: plot new routes for your shipping and navies by toggling individual sea regions to limit or ban shipping there entirely.
Naval Treaties: Struggle to keep the peace by following internationally agreed upon rules, or creatively defy the world consensus by exceeding your limits.
Amphibious Landing Vehicles: Add power to your beach landing by researching and producing specialized combat vehicles for your marines.
New Music: Original music composed specifically for the Man the Guns expansion.
Fuel - a new resource that mechanical units consume.
Different types of naval terrain, that can modify naval combat in different regions.
A completely redone naval combat system.
Gameplay rules - a large amount of options to further customize gameplay experience and make organizing multiplayer sessions easier.
Updated map-modes - new map-modes and a new configurable quick access system (a lot like in EU4).
70 new releasable tags added to the game to enable decolonization as well as a variety of map changes - more states in places like west Africa, and more accurate states like East Bengal/Bangladesh, and more.