Hearts of Iron IV HOI IV, Open Beta Weekend Notes (25th June

Generals!

We decided it would be best to run 1.19.2 as an Open Beta over the weekend to get some potential player input over the weekend. This will allow us to make any necessary fixes as well that might pop up as a result from having a wider testing net.

The upside is earlier patch notes!

One thing I want to mention beforehand however is that there are no massive balance changes in this patch at the moment. This does not mean that we are not seeing the flagged issues, and we are aiming to do a wider balance pass, but more on that next week.

For now, thank you for the input and stay safe out there.

/Batya

How to join this Open Beta:

This beta client is Operation Postern v1.19.2.0.a69c (d7b6)

To install Open Beta client, follow the instruction below:

Right-click the game in your library
Select Properties from the drop-down menu
Select Game Versions & Betas
Select the beta branch called open_beta

If you are already on the Open Beta client, you should get an update automatically.

Finally, to report any issues you find, in relation to this beta, please use the bug report forum and make sure to include the version you’re using. That way our Jira won’t go nuts trying to figure out what bug report belongs to what.

Open Beta Notes

Known issues

Pending hotjoins can be overwritten by new requests, resulting in an inability to launch the game
Players bypass the hotjoin flow when joining a lobby that has loaded into the map, but not started yet

Balance

Expeditionary Leader trait Non-Core Attack and Defence reduced from +15% to +10%.
Tuned down the "Spirit of St. Bernard" spirit, which in combination with other things could give 105% casualty trickleback and unending armies of resurrected zombie Swiss. Fixes
INS: Feint uprisings now cost more manpower (2500 > 5000), but less infantry equipment (2500 > 1500).
INS: Indonesia will now core all of their starting states in the revolution
AST: Decreased Non-Core Attack / Defence values by roughly half on the 'Australian Military Forces' National Spirit .
AST: Decreased Citizen Army penalty to non-core Attack and Defence from -25% to -15%.
AST: Rebalanced the Australian Air Branch, decreasing especially their mission efficiency.
SIA: Increased Siam's starting stability from 19% to 29%.
SIA: Reduced Build cost IC for 'Unconventional Tank Designs' from -15% to -10%.
SIA: Removed Reliability penalty for 'Unconventional Tank Designs' and added a -5% Soft attack penalty instead.
SIA: Reduced compliance gain from full Civilian support from 10% to 5%.
SIA: Reduced compliance gain from the Focus 'Built to Withstand Every Flame' from 10% to 5%.
SIA: Reduced Research speed, Production efficiency cap, Defense, Organization, Entrenchment and Output by on average ~1% gained from Asian Democratic Compact per faction member.

Gameplay

Updated tooltip for "Establish the ABDACOM" shared focus to make it more clear that only faction members are eligible to receive invites to join the ABDACOM.
Fixed the description for the focus "Reestablish the Guominjun" to not make the rather bold claim that Sinkiang was led by Moustache Man in the 1939 start. Fixes
A subject owning a single state no longer creates a 'new war participant' popup when joining a war.
Added a new event sound tickbox to disable/enable scripted event sounds. For example speeches.
The new releasable nations in Indonesia now also have access to the Nusantara/Greater Indonesia formeable decision category
Added joint focus tree icons to ABDACOM focuses.
INS: Clarified the effect of the Focus 'Privately Owned Military Industry'.
INS: The Indonesian focus 'The Timor Issue' will now dynamically switch icons & loc if Timor is independent.
INS: Indonesia can now core East Timor using Unity in Diversity decisions.
INS: Indonesian decision "Order a Ceasefire" now requires escalation 2+
INS: Allow an Indonesian-formed Netherlands-Indonesia union to take most Dutch economic focuses from the joint tree.
INS: Added a decision for the Netherlands-Indonesia Union to move its capital to Amsterdam or Batavia.
INS: Hollandia will now be renamed to Jayapura if Indonesia is independent.
INS: Added a small naval branch for the Dutch East Indies joint tree, which is available during peacetime.
AST: Added the Australasia formable.
AST: The Focus 'Reclaim the Lost Territory' now transfers all land, naval, and air forces to Australia.
AST: The Focus 'Singapore Strategy' is now available if either ENG or AST controls Singapore, instead of only ENG.
AST: The 'Alice Springs' Focus has been reduced to 35 days.
AST: Australian Infantry Divisions now have the proper division icon.
AST: A. Ruthven set as leader if monarchist UK starts uprising in Australia.
SIA: Added a decision to increase the Civil/Military wings approval of you if they are rebellious at the cost of a temporary negative National Spirit.
SIA: A civil war triggered through the Khana Ratsadon only happens once now. If they become rebellious again a negative spirit is applied instead.
SIA: the Royal Palace Directive focus now unlocks a decision to increase the Military/Civil wing opinion of you, without pissing the other party off. This has a 365 day timeout.
SIA: Added a new focus in the Pan-Thaiism branch that allows you to end the factionalism of the Khana Ratsadon if both the Civil and Military wing approve of you for 270 days. This focus shuts off the Khana Ratsadon system and merges the civilian and military wing spirits.
SIA: Added the king of the white elephant as a Movie poster decision, giving weekly stability.
SIA: Removed increasing cost for theater decisions.
AST: Decision 'Scorch the North' gives effect when specific states are naval invaded instead of when at war.
SIA: Added option to pick a new leader when the Seri Thai Takes over, Phin Choonhavan or Khuang Aphaiwong.
SIA: Added options to sway individuals via decisions for the Seri Thai. Each general increases the strength of the civil war for your side by 5%.
SIA: The Seri Thai civil war can now be avoided if the combined civil war strength for the player is over 80% (5%/general swayed + total democratic support).
SIA: In the Seri Thai branch the Focus 'Prepare to Drop' now gives a special forces National Spirit.
SIA: Rising up as the Seri Thai against Japan now seizes some valuables, giving a temporary bonus.
SIA: Made the requirement for forming the Greater Thai empire more clear.
SIA: Starting a limited war now requires the territory to be adjacent to yours.
SIA: When agricultural tax reduction is removed you now gain a one time tech bonus for industry.

Stability & Performance

CTD: Fixed a crash that occurred when calling 'gain_xp' command on a fleet without an Admiral.
CTD: Fix a crash that occurred when assigning a deployed Field Marshal to an Army Group
OOS: Fixed a late-game gamestate OOS caused by MIOs.
OOS: Fixed an OOS that happened if a client had previously played an ahistorical game in the same session before joining a historical MP game.

UI

The Division Designer click-shortcuts now also apply to HQ templates.
Fixed an issue where Division Designer dropdown items buttons did not have the right size.
Added dams to the States & Construction mapmodes.
Fixed wrong interactions and tooltips for Generals while assigning a leader to an Army Group.
Now showing all manpower modifiers in tooltips even if they sum up to a neutral number.
Divisions with multiple active commander abilities now show them all instead of just one.
Divisions with an active ability that is being nerfed because of late joiners show that reduction.
Fixed Assign Commander tooltips with TAOG disabled.
Improvements to MP security

AI

ITA: Introduced historical Italian fighter designs for the AI to build.
GER: Introduced some intermediate plane variants for the improved_small_airframe.
ENG: The UK will build more synthetic refineries to safe guard their supply of rubber. (autarky is king)
USA: Added home guard defense logic to protect the continent once the Axis become a threat.
JAP: Japan is more likely to naval invade Borneo now.
ENG: The UK will be more likely to take 'Gateway to Europe' decisions on Historical mode.
ENG: The UK will be more likely to take 'Gateway to Europe' decisions on Historical mode.
INS: Indonesia's AI will have a higher risk tolerance for raids if the only alternative is cancelling them.

Modding

Added logical AND, OR, XOR and NOT math expression functions.
Added a lerp function to the math expressions.
Add 'always_show_on_actions_tooltip' bool field on Advisors to avoid 'on_add and on_remove' effect tooltips being lost when the advisor has a trait with a custom tooltip.
If a radio station is disabled, scripted 'play_song' effects will respect this.
Revert " If a radio station is disabled, scripted play_song effects will respect this".
Added support for scripted 'unit_animations' on raid types.
Added atan and atan2 math functions

Bugfix

Fixed a bug where a leader's description would appear twice.
Fixed an issue where Volunteers would not come back when Air Base Access is enabled.
ICE: Fixed 'Reclaiming the Empire' focus for Iceland to be doable again after a war with the owner of Greenland is concluded.
Fixed a case where Romania could snatch Bulgarian territory from a third party occupying them totally via the 'Puppet Romania' focus. Now Bulgaria is required to be at peace for this focus.
Fixed a bug where a spearhead or offensive line order was not advancing to destination tiles
When writing a file, it's now guarded by a try/catch and will error when unable to write.
AST: The Focus 'World Peace' will now actually allow sending Volunteers to the Spanish Republicans rather than Nationalists.
AST: Australia now gains the 'Liverpool Dockworker' uprising from 'Out of the Den'.
AST: The Focus 'Lang is Right' shows the right tooltip (it is -0.05 Political Power Cost instead of -0.05%). Colour is also now green for good.
AST: Fixed missing localisation in Smuggle Arms decisions, and made the Irish and Northern Irish smuggling use the same timer.
AST: The Focuses 'Liberate the Colonies' and 'Red Solidarity' now have a tooltip to show what they do.
AST: The Focus 'Join the Comintern' has a better tooltip explaining what is going on. Australia's faction will only merge into the Comintern, if Australia is the faction leader.
SIA: Fixed an issue where you could demand to release your own territories.
INS: Fixed a bug where Indonesia could have two resource trades.
INS: Fixed a bug where Indonesia would suddenly become the Republic of Indonesia again after forming the Netherlands-Indonesia Union.
INS: Fixed certain characters not appearing for the Netherlands-Indonesia Union.
INS: Fixed a bug where Indonesia could start a new volksraad decision before clearing the event, allowing the same decision to be taken twice.
INS: Fixed a typo in the Focus description 'Women in the Military'.
INS: Fixed a typo in the Focus 'Women's Sufferage'.
INS: Fixed a typo in the Focus description 'Continue the Hybrid Politics'.
INS: Fixed several Focuses occasionally attempting to target Interior Borneo.
SIA: Fixed missing tech names for tech bonuses.
HOL: The Focus 'Continue the War in Batavia' now moves the capital to Batavia instead of Bandung.
Fix Army Leaders cloned for a Civil War still thinking they are deployed with the Army of the original Leader.
Fixed a bug where infiltration tokens disappear when loading saves.
Fixed an issue where Army HQs became the default garrison garrison template if all other templates were locked.
AST: 'The Phosphate Commission' now requires both owning and controlling Nauru.
INS: Indonesia's leader will no longer reset after peacefully gaining independence.
AST: The National Spirit 'Nauru Pact' tooltip has been edited so its effects alter depending on GER being in the faction or not.
AST: Phosphate Commission spirit is now being removed by completing the Nauru's Return to German Hands, instead of being removed by the event, making the effect clearer.
AST: Added fallbacks for effects of event Nauru's Return to German Hands to cover if Australia is subject of UK but not in the same faction or if not subject at all.
AST: Event Nauru's Return to German Hands either gives a German Guarantee or adds Australia to German faction, not both.
JAP: After being defeated in the war, Japan is npw discouraged from joining the Axis.
Fixed a bug where lobbies with more than 20 players would struggle with more people connecting to the game
SIA: Fixed a bug where the Allies could decline Siam's join offer from Seri Thai.
SIA: Fixed a bug that caused the Seri Thai to not add intel bonus properly
SIA: Fixed a bug that caused players without La Resistance DLC to not get a proper bonus from the Seri Thai OSS Focus
AST: The Focus 'Defying American Interference': Added fallbacks if the Philippines are no longer subject of the USA.
AST: The Focus 'Defying American Interference': Added event chain asking JAP to guarantee AST if they're not in the same faction, and updated tooltips for the focus and its event chains.
AST: Changed event images for AST_diplomatic_events.73, AST_diplomatic_events.76
INS: The Indonesian communist branch will no longer create a generic faction with the 'Strength in Unity' manifest.
INS: The Indonesian AI will no longer wait before establishing a revolutionary HQ, and will be far less likely to build the HQ in Papua.
Fix the commander skill bonus modifier not being properly applied
JAP: Fixed Japan's 'Strike the Southern Road' Focus being unreachable if Siam no longer existed.
HOL: The Netherlands will no longer sometimes cave to the British when going communist or fascist.
AST: Added TAOG check to event The 1938 Sesquicentenary (AST_political_events.6)
SIA: Fixed an incorrect tooltip in the Seri Thai Branch.
HOL: The Netherlands will now be invited to the Allies despite being at war with Indonesia after getting invaded by Germany.
Fix issue where militia raid unit models were in an idle pose while displayed above the raid arrow.
HOL: Fixed bug where the Netherlands would not get the 'Obtain Foreign Colonial Investments' decisions after completing the required focus.
AST: Focus Done Meddling will no longer flood error log on hovering over it.
Remove incorrect tooltip which falsely claimed an advisor would be unlocked.
Fix AI constantly deploying and withdrawing Army HQs under Field Marshals.
INS: Indonesia can no longer take the 'Purge the Opportunists' Focus, which creates a faction, if Indonesia is puppeted.
INS: Fixed an issue where the Indonesian National Revolution ending would sometimes not whitepeace the rest of the Allies.
Fixed some missing idea icons - for Design Companies and others, amongst them AST_kirov, BEL_kirov, smb_organization_of_american_states_member
AST: Set to correct Fascist cosmetic tag when becoming independent manually.
SIA: Fixed an issue where changing laws would not properly adjust the Khana Ratsadon.
AST: Renamed the Bristol Blenheim to the Bristol Blenheim Mk IF (this variant replaced the bomb bay for extra under-carriage guns).
SIA: Advisors when playing without Thunder at Our Gates enabled should no longer be displayed as question mark placeholder.
AST: Added tooltip for Planned Extraction to show this focus will give access to the endless Pilbara steel decision.
AST: Mount Isa Industrial Concern will now display correctly when upgraded through Planned Extraction.
Division Designer should now save correctly restricted equipment types
Fixed the crash that could happen due to the spy operative mastering ability to be in two countries at the same time
Fixed the tooltip for the Maphilindia achievement
Fixed the Treaty of Saadabad focus branch overlapping the Kurdish focus tree as Iraq when obsolete focus branches are shown
AST: Event The Prime Minister Succumbs localization has been fixed to reference correct character
Fixes Czechoslovakia not puppeting Hungary after taking the Neutralize Hungarian Threat Focus and capitulating Hungary.
Sync HQ deploy template and CP reservation when retemplating a deployed HQ
Anzac Achievement is now correctly only triggered by generals and field marshals
Event Loyalties to Britain: Added triggers to hide old options if the Dominion is on the same ideological path as ENG, making it unavailable to leave the Commonwealth through event; Added new option with triggers to show if the Dominion is on the same ideological path as ENG.
ENG: Fixed an issue where the United Kingdom wouldn't Bypass the focuses Secure Iraq and Secure Iran when they already had them as their puppets or were at war with them
Give Control of State action should now display why you can't give control of a state in a specific condition, instead of allowing it to be done, but failing to properly act.
AST: Fixed an issue so the Focuses 'Done 'Meddling & 'The Ultimate Overseas Duty' don't reset war participation.
INS: Fixed an issue where the Indonesian Volksraad would be inaccessible after a veto.
INS: Conrad Helfrich is no longer unavailable as a Chief of Navy for Indonesia
HOL: the National Spirit 'Profitable Colony' is no longer removed immediately upon being added
HOL: The achievement 'Bevrijding' is no longer impossible with TAOG enabled.
SIA: Fixed 2 planes not showing up in the tech tree without BBA.
AST: Updated Expéditionnaire Français en Extrême-Orient name to CEFEO.
Heavy Armor HQ Security is now capable of exercising instead of relaxing all day in their Tanks.
The Regimental Support Rocket Battery no longer affects division speed.
GER: German focus 'Around Maginot' now targets an Indonesian-formed Netherlands-Indonesia Union.
INS: Fixed a missing loc string in an Indonesian event
INS: Indonesia no longer needs to control impassable states such as Interior Borneo in order to win the revolution
AST: Now has access to their second Special Forces branch via the Marines focus.
SIA: Fixed an issue which caused a limited war to white peace without transfer instead of correctly transfer states if France capitulated while the limited war was ongoing.
SIA: Removed a redundant requirement in the Focus 'Spread Democratic Ssentiment In Universities'.
AST: Failsafes for mission 'Organize a Strike' and spirit 'Strike Ongoing' to cancel both when completing the Focus 'All for One, One for All'.
AST: Removed misplaced trigger on 'Strike Ongoing' which made it cancel if not owning Nauru.
AST: Fixed so advisors Milford, Northcott, Jeffrey, Goble & Burnett get discount from Relief of Command/Independent Air Force,
ETH: The Focus 'Freedom at Gunpoint' now will only take african states and leaves the rest alone.
AST: The Focus 'The Irish Anti-Britain Pact' now correctly grants Australia military access and docking rights through Ireland.
AST: Decisions Vichy Out of Africa is now removed by the Focus 'Undeniably Ours', not 'Done Meddling'.
ABDACOM: Vichy France no longer has access to the ABDACOM joint focus tree.
INS: Indonesia will no longer lose Dutch generals when having completed Volksraad Compromises.
INS: Made it so that Indonesia cannot side with Japanese invaders if the focus 'The Industrialized Colony' has been completed, making it no longer possible to gain 7 research slots as Indonesia.
Block disbanding armies with a deployed HQ, preventing an exploit
GER: Decision Reichskommissariat Australasian required states has been adjusted to match map changes.
SIA: The 'Artillery Enthusiast' trait now no longer applies to the Self-Propelled Artillery.
SIA: Fixed an issue where limited wars would cause France to not be able to join a faction.
SIA: King of the White Elephant propaganda poster tooltip and its effect on Weekly Stability have been fixed.
Fixes the conflicting available tooltip for 'The Between the Seas Concept' to be clearer
GER: Bougainville added to focus Break the Anglo-French Colonial Hegemony
Bougainville has now been included in effects that target the state for GER, JAP, PHI (i.e.: focuses that take control of pacific islands etc.).
Fixes issue where division template used in a garrison could be edited to have zero suppression.
RAJ: Loc typo for displaying current resistance in string currentStateResistance.
AST: Communist Civil War should no longer happen if Australia is already Communist.
Fix Shift+Click allowing Spain to deploy locked HQ templates.
SIA: Fixed a bug where the Asian democratic compact wasn't updating correctly. It will now always be updated once at the end of each month.
SIA: You now need to be a faction leader to get updated bonuses from the 'Asian Democratic Compact'.
SIA: Fixed tooltip for 'Asian Democratic compact'.
SIA: Fixed an issue where invite country to Asian Democratic Compact wasn't showing
ETH: Fixes Ethiopia being able to annex colonial powers through the Horn of Africa decisions if the colonial powers moved their capitals there.
AST: Focus completion time increase/decrease in event Halfway to Federal Election & decision Final Reforms has been edited to match
INS: Fixed typo in Murk Boerstra's name.
INS: Fixed typo in the Focus 'Overallwagen' -> 'Overvalwagen'.

As you were!

(And try to leave this place in one piece while we're out.)

Hearts of Iron IV HOI IV, Open Beta Weekend Notes (25th June 2026)

Full Patch Notes