Hearts of Iron IV

Hearts of Iron IV

World War Zero
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Update: Dec 3, 2023 @ 6:34am

Version 4, Patch 1

This patch includes some bugfixes and graphical additions.

General
- Added a game rule to disable the Free Europe Alliance from expanding
- Added generic icons for MBT's, IFV's and APC's


Fixes
- Construction screen should now have all options available
- The GJA nuke-related achievement should trigger properly now
- The Lenin event now only fires once
- Added localization to Lenin event and Indonesian formable events
- Nuclear Winter should no longer affect the Moon

Update: Nov 30, 2023 @ 10:12am

Version 4 - General Update & AAT compatibility

This patch is largely a general update to the mod, improving and updating numerous aspects of the mod.

Features
- World War Zero is now compatible with AAT
- Added an Energy Crisis event that triggers about 3,5 years into the game
- Added natural resources, namely oil, as a non-building produced resource on a number of states on the map. This is accompanied by a new map mode that shows the location of global oil deposits
- It is now possible for the player to switch their ideology and government form via decision
- Excessive nuclear detonations will eventually result in a Nuclear Winter
- Reworked Moon colonization mechanic: The Moon is now a playable area on the map, instead of a GUI element, meaning Moon states can be taken in peace conferences and fought over during wars. 15 new unique events (one for each colonizable state) can be discovered during expeditions on the lunar surface. Wars on the Moon will be fought with the new Space Marine unit. Population of the Moon can be increased with colonists, but no building is allowed on the lunar surface. Each Moon state present the player with some information about the location to be colonized.
- Added 22 generic portraits (17 male, 5 female) fitting the mod style
- 12 custom achievements added
- 12x3 custom infantry equipment icons added
- Added 33 sub-technologies to the tech tree, which unlock equipment. Relevant normal technologies have been updated with different effects

General
- Free Anarchist Communes, Russian Patriarchy and Siberian Military Junta have new flags for their regional formables
All-African Alliance has a new flag
- Added Indonesian Formables
- Adjusted the amount of energy provided by buildings at game start, now lower than before
- Special Forces are unlockable via tech tree
- Added a number of flavor news events
- Added a number of custom game settings
- The Pacific Mandate is now guaranteed by various powers of the Pacific
- Added AI country paths for Indonesia
- Crimea and Brittany now begin in the Independent Economic Zone
- Added custom MIO’s for AAT, most likely placeholders for now
- Added Palestine as a releasable nation
- Improved certain military unit icons
- Added 4 country leaders for USNA splinters
- Global Jihadi Army now has a short focus tree which guides them towards invading the Middle East should they unite Central Asia
- Added the Republic of China as a releasable
- Balancing has been applied to economic and manpower laws
- Free Europe will now attempt to create an alliance consisting of post-EuroFed nations
- Added unique space agencies for all nations that start with one, plus Israel, Indonesia and Russia
- Russian nations can no longer partake in diplomacy until unification has been completed
- Added the focus “The Greatest Trial” for Russian nations, which triggers an event chain that allows you to address the rival warlords
- Added a nuclear detonation counter (next to the nuke counter), which tracks the amount of nuclear detonations that have taken place during a game
- Should the Brussels Conference completely fail, and Belgium gives up, they get the option of becoming a nationalist Belgium
- Should the Northern South American nation (even I forget the name) unite South America, it will have the option of liberating South American nations and creating a faction with them in it, they themselves will become Venezuela
- Should Pannonia become independent, they get the chance of returning states cored by others and becoming Switzerland
- African generic focus tree has been improved with new graphics, focuses and general improvements
- Added an Indian formable
- Added a new state category, Gigalopolis, available via state upgrade decision for Megalopolises
- Added new cosmetic tags for Egypt, Ethiopia and East African state should they unite Africa
- USNA missions to conquer Western Hemisphere areas now add days to the mission to complete the conquest
- USNA now has the option of delaying the Western Hemisphere mission once, for more time to prepare
- AI USNA should be much more competent in their conquest of the Western Hemisphere, but still very likely to fail
- Added a formable for France, Italy and Iberia
- Siberian Royalists and Mutineers have custom OOB’s, Royalists should now survive longer
- Added Ireland as a releasable
- The Trade screen now has a leaderboard for Economic Zones
- Added German formable
- Added Caucasian Union as a releasable nation
- Added Pacific League formable, available for most Pacific nations

Map
- Added a number of victory points across the world, mainly in the Middle East and North America
- The Great Lakes have been separated into their own strategic region
- The state of Georgia now actually contains Tbilisi
- Fixed the population in Central Asia, which was too high due to calculation error, excess population distributed to Afghanistan/Pakistan/Northwest India
- The Amazon rainforest has decreased in size by about one province all around
- The area surrounding the Amazon lake is impassable
- Increased the size of the Sahara desert by about one province all around
- All lakes are now detached from states. This should increase AI performance in managing fronts

Fixes
- Fixed a number of bugs/mistakes in Indonesia content
- Fixed a number of bugs/mistakes in Indonesian warlord content
- Bridge construction projects now completable only once, as intended
- Economic Zone leadership takeover should work smoother now
- Free Canada should now spawn militia properly during the USNA-CAN war at start of the game
- R&D teams should now work properly
- All states should now spawn with at least 1 infrastructure
- Resistance and compliance should now correctly affect state coring costs
- Fixed a GUI bug that hid certain construction options (either this was a new bug or by some miracle nobody ever reported it, or maybe I’m just dumb)
- Post-collapse USNA should no longer be able to join the splinter alliance

I have omitted smaller changes, and I have probably forgotten something too.

Update: Mar 18, 2023 @ 9:47am

Quickfix for satellites, savegame compatible, fix will take effect the next time satellites are launched/destroyed.

Update: Mar 18, 2023 @ 6:42am

Version 3 - The Space Update

After nearly 5 months, the new WWZ update is out. Main features include the new space mechanic, state coring mechanic, improved nuclear weapon effects, bridge construction projects and a new branch of the generic focus tree about government forms.

Known issues: Some localization, namely of the new government form focuses, is missing. This will be addressed shortly.

Features
- Space mechanic. Establish satellite networks around the Earth, colonize the Moon and exploit its riches, and fight your enemies for control of the Earth orbit and the Moon itself. USNA, Australasia, China, India, Japan and EuroFed start the game with active space programs
- State coring mechanic. Core non-core states, the price of which is determined on a state-by-state basis
- Improved nuclear weapons. Nuclear strikes now kill civilian population of the struck state, and apply state modifiers that get worse the more a state is hit
- Bridge construction projects. After researching the relevant industrial technology, you are able to construct massive bridges connecting continents and spanning large bodies of water
- New generic focus branch. For nations with a government form National Characteristic, a new branch of the focus tree is unlocked
- Space-related generic focuses. Kickstart your own space program, and claim dominion over the Earth’s orbit or the entirety of the Moon

General
- Indonesia has seen a number of improvements and bugfixes
- Added new space-themed loading screen
- Post-USNA states of California, Texas, Northwest Imperative, Mississippi and Cascadia have unique leaders
- Post-USNA states of California, Great Lakes, Northeast Combine, Appalachia and Texas have short unique focus branches
- Slightly expanded Northwest Imperative’s unique focus branch
- Every post-USNA nation (should) comes with a unifier flag/cosmetic tag
- Unique economic laws for Japan and Korea
- Leader of the GJA now a field marshal
- Nations where a Corporation has their headquarters start with relevant Corporation already selected
- All rivers of the world are now two sizes larger
- In preparation for the coming Israel patch, Israel starts the game with a unique OOB and some national spirits. The states of Israel also have some new victory points
- New map mode to show continents
- A number of states now start with a rocket site (a requirement for many space mechanic actions)
- The state of Khovd has been split in two for more pleasing borders in the event that Russia and China split Mongolia
- The Research Teams teased a long time ago but broken by BBA have now been fixed and are ingame, found in the R&D section
- Tsarist remnant leaders now also field marshals/admirals
- Should the Tsarinadom manage to reach its enclaves, they can annex said countries with a decision
- Added Eurasianism to Imperium of Rus and Rodnover Reclaimers
- Imperium of Rus now has a proper unifier cosmetic tag
- New unification content for Middle Eastern nations (not counting Israel), including cosmetic tags and so on
- New formables for Germany, the Balkans and the Nordic kingdoms
- Central Asian nations (not counting GJA and Sufi) have small focus branches about the unification of Central Asia
- United Kingdom, Siamese States and Republic of Japan have new national spirits about relevant royalty
- USNA has received two new generals from game start, and an event about them
- USNA’s Canada pacification mission has been updated to fit new coring mechanic
- USNA’s Attaché mechanic has been updated, you now receive bonuses depending on the level of approval, hover over the approval meter to see more
- Slightly modified the USNA post-Canada missions for better flow
- Russian, African and Chinese communists have new national spirits about their respective forms of communism
- The country selection screen has been graphically updated
- Added a number of AI strategies. For one, Gaia and Sahara should ignore everyone else politically, and vice versa, and USNA should be a little bit more competent in their Western Hemisphere conquest (though the AI is still practically guaranteed to fail due to its own stupidity)
- The Sahara starts the game as a demilitarized zone
- Added new manpower law, “Unarmed nation”, made for countries like Gaia but I suppose the player can always take them if they want to
- Modified certain technologies to increase the amount of resources resource buildings produce
- Switched Egypt’s core on Sinai to a claim
- Switched Turkey’s core on Georgia to a claim
- Belgium now core of both France and Germany
- Easter Island now claimed by both South American nations
- Albania and Sofia now claimed by Balkans
- When leaving EuroFed, former members will now leave the Euro Economic Zone
- Upon independence, former EuroFed states receive a temporary national spirit regarding independence
- Added the Pacific Mandate Termination, when the world reaches 50% tension, the Pacific island nation will distribute its holdings to relevant nations and cease existing
- Added and modified certain unit templates for Russian nations, Canada and USNA to include militia
- Added a number of debugging log effects, if you open the console during gameplay you can see what other nations are up to (to a certain degree)

Fixes
- Added a working weather system. Previously the weather of the world was just a basic “it works” thing, now it has been somewhat improved. There are a total of four “weather zones”, which are applied in relevant parts of the world. The current version is lacking in graduality, so weather changes may and will be sudden and drastic. Such is life in WWZ
- Various country history file fixes, such as China lacking the correct technologies
- Gaia and Sahara are effectively unplayable pending future changes (as in they have no decisions, focus trees etc)
- Former content regarding coring states has been removed to prevent overlap with the new coring mechanic
- Fixed a province in Northern South America that was cut off from the world
- Added a number of sea crossings around the world
- Updated military leader selection screens graphically
- Eliminated certain vanilla political events that could cause nations to switch ideologies unintentionally
- All resource buildings now produce double the resources
- EuroFed Federal States focus tree availability fixes
- EuroFed focus tree idiotproofed (I am the idiot)
- The amount of trains at game start doubled (AI really loves to take that train decision that gives you free trains)
- The vanilla Polish cavalry charge loading screen replaced with an original one

Update: Oct 25, 2022 @ 9:06am

Patch 1

Fixes:
- "Enact Policy" decisions can now be fired more than once, as intended
- USNA air force mission fixed and improved, you can now either make 800 CAS or 400 Tactical Bombers
- Added a basic CAS template for everyone
- Unique sites now work as intended, giving their effect to state controllers instead of state owners
- Russian regional focus tree air equipment problem fixed
- Disabled all non-jet or rocket engines on the aircraft designer, disabled all defensive turrets as well
- Some loc fixes, including an attempt to solving the liberalism problem with Turkey

Update: Oct 23, 2022 @ 8:33am

Version 2 - By Blood Alone compatibility update

The main feature of this update is its compatibility with By Blood Alone. In addition, there are a number of new features and fixes detailed below.

Known issues: Since BBA, the new and improved peace conferences added by Paradox are not in the greatest of states. We will attempt to fix this as best we can in the coming days. Expect some funky peace deals in the meantime.

Features:
- Added an economic zone mechanic. Every nations either belongs to one of the economic zones, or is independent of them. Economic zone members benefit from the size of their zone in the form of industrial bonuses. More info available on the economic zone section of the trading screen.
- Added "unique sites". Only a few of them exist at the moment, but more will be added in the future. Unique sites give their controller minor benefits. Current unique sites can be found in Greenland, Seychelles, Riyadh and Australia.

General:
- Improved the country selection screen. The screen now shows the majority of countries with access to some sort of content, be that unique content, regional focus trees or formable nations.
- States ownership tweaked in Indonesia/Philippines.
- Following an USNA collapse, the American nations have received a short focus tree addressing the new situation. USNA, Colorado, Imperative and Mormons have unique focuses alongside the generic branch.
- Following USNA collapse, American nations now have access to a mechanic similar to the Russian unification mechanic.
- A number of map improvements have been implemented. These are mostly focused on the Western Hemisphere, where a large number of new victory points have been added. The border between the FNL and FLN now reflects the Forever War more accurately. The large lake in Australia has also had its shores filled with agricultural areas.
- A number of "fall of" events have been added. These are triggered when certain locations fall to enemies.
- Work continues on trying to make the European Federation work as intended. At the very least, the AI should no longer linger in completing the post-conference focuses.
- Added graphics for the independence branch of Federal State focus trees.
- Readded a number of vanilla decisions, and adjusted existing ones according to BBA changes.
- Added a number of new generic decisions, such as a decision relating to nuclear stockpiles, and powerful "Enact Policy" decisions.
- All Russian cosmetic tags now have unique flags. Leader portraits will also change to show these new flags.
- All Mexican cosmetic tags have had the same treatment as above.
- USNA AI is now more competent in pursuing its goals of conquering the Western Hemisphere. Very likely to not succeed, but at least it does its best.
- Improved the South African civil war by giving both sides a custom OOB.

Fixes:
- Added a naval port to the state of Mississippi
- Fixed a number of missing graphics for ideas
- USNA missions should no longer appear post-collapse
- Remaining harmless-yet-enduring errors in the error log should be cleared
- A lot of other misc errors have been fixed, not worth mentioning here in detail

Special thanks to all testers who helped hunt down some critical bugs during testing. The rest of the testers who didn't so shit can fuck right off.

Update: Sep 16, 2022 @ 9:52am

Patch 4

With the release of this patch, the team will start working on the next big update, meaning only hotfixes should be expected until its release.

General:
- Russian warlords will avoid diplomacy with each other
- Russian warlords now unlock various cosmetic tags (in most cases) when they increase in status. Flags for said cosmetics still underway
- Tsarina Aleksandra's personality trait "Rightful Heir" has its loc fixed
- Modified some post-unification expansion content for Russia, you should now always get either a core or a claim when appropriate
- Pre-unification content of Russia now gets locked away post-unification, preventing some exploits
- Added decisions for major countries to send military aid to Canada if the war continues for long enough
- Added decision for Finland to send military aid for Karelia if world tension is high enough
- Finland, Sweden and Norway start the game with many shared treaties and opinion buffs now
- Trade laws now increase the amount of intelligence "leaked" to foreign countries
- Added world tension requirements to ideologies for sending lend lease/guaranteeing a nation
- Improved the focus title plate graphic assets to make it clearer which focuses are available/unavailable
- Added a number of claims/cores across the world for nations with rightful clay outside their borders (for instance France now has a core on the island of Brittany)
- Added missing gfx for an EuroFed national spirit
- Ensured that in the case that an EuroFed puppet gets independence, they lose their EuroFed National Characteristics, which are replaced with a new set of three NC's
- EuroFed puppet AI should now rush the post-Brussels Conference focuses more effectively
- EuroFed AI will now act smarter during the Brussels Conference, meaning the AI now has an actual chance (roughly 50% atm) of succeeding in the conference
- The randomization scripts for global infrastructure and resource facilities has been tweaked, players should find the world with higher average infrastructure, and greater amounts of resources available domestically and on the market
- Added new terrain pictures
- Other minor changes

Update: Sep 8, 2022 @ 2:41pm

Hotfix to nerf the South American national spirit a bit. Flat bonus to entrenchment replaced with percentual increase, the nat spirit is removed on unification, and it will be removed if either of the two South American countries stops existing before unification.

Update: Sep 8, 2022 @ 7:58am

Patch 3

Fixes:
USNA:
- "Pacify Canada" mission now checks for resistance correctly, as in it requires less thatn 10% resistance, not more

Indonesia:
- More bugfixes and improvements
- Events now have proper pictures

General:
- 40 new event pictures, old events have been given new pictures
- Various world news events now increase world tension
- Post unification cosmetic tags for South America, Mexican nations (expect Mexican State) and Central Asian nations (except GJA and Commandery)
- Changed the names of a few Russian leaders based on feedback
- Added a number of leader traits mostly in Russia, Central Asia and the Middle East
- 11 new generic industry/military National Characteristics

Update: Sep 5, 2022 @ 9:07am

Patch 2

Fixes:
USNA:
- Various improvements across the board based on feedback
- The "Pacify Canada" mission now requires 50% or more compliance and 10% or less resistance in each state to complete. Additionally, defeating the Canadian revolt grants 10% compliance in all Canadian states.
- The Military Reform mission has been reworked slightly. If you fail a mission, the penalties will be applies, and the mission will restart. Additionally, the related National Spirit will incrementally lower its debuffs as you complete mission, finally disappearing when reform is completed.
- Naval reform mission should now work correctly.
- In the event of USNA collapse, Mexican/South American nations should now get their freedom as intended.
- Slightly increased USNA beginning war support
- Added event to inform player when they reach the end of current content

Indonesia:
- Numerous improvements to the overall experience
- Added missing loc and tweaked existing loc
- Globalist path has been nerfed
- Removing the Anti-Indonesian Resistance mechanic made slightly easier

General:
- New loading screen, made with Midjourney AI
- Fixed oversight where nations could not declare war on nations of the same ideology
- When declaring independence from the Federation, European nations lose their EF-related National Characteristics, and receive a new random set
- Problems with nuke and war justification events should be fixed
- Renamed Seinäjoki to Seinämeri
- Renamed Dukedoms and Principalities in Russia to correct forms
- Clarified European Federation coring decision unlock tooltip
- Event picture to event when a commander is wounded has been replaced
- Resource buildings have been made cheaper, from 15000 IC to 10000 IC (Initial cost)
- Economic and manpower laws have been tweaked, nations should have a notably smaller manpower pool now, will continue to monitor balance
- Fixed incorrect opinion modifier relating to Brussels Conference