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Old World February Update: Engine and rendering upgrade

Main Branch 1.0.82189 Release 2026-02-18

Headline changes

  • Major Unity and rendering system update

  • Improved graphics performance and memory optimization

  • Unique Unit (UU) tech bonus cards are now unlocked through culture instead of tech

Known Issues

  • Portrait Age Interpolation is not working and has been disabled regardless of the player setting

  • Fog of War can flicker on and off following movement in some cases

  • Unit models and banners can fail to display consistently during AI turn

  • Free promotion icon partially hidden

  • Cycling to a stacked unit can show their icon behind other units

  • Volcano display issues

Design

  • Unique Unit (UU) tech bonus cards are now unlocked through culture instead of tech

  • First tier UU bonus cards have had their cost increased from 100 to 200, give 2 units, and require a city with Strong culture

  • Second tier UU bonus cards require a city with Legendary culture

  • Zealot leader general now performs a Heal action after each kill, instead of being able to Apply Enlist

  • Fervent (Piye's unique trait) now enables Apply Enlist as a leader general, at a cost of 100 civics (Wonders and Dynasties)

  • Ballista strength reduced from 6 to 5

  • Carthage city founding bonus reduced from 200 to 100 civics

  • Founding Christianity no longer requires ownership of a Jewish city, now requires 3 Jewish cities globally

  • Engineer promotion and general trait allows road building instead of bonus against siege/ships

  • Added new national ambition - Control three of each Legendary Improvement

  • Changed Control Six Legendary Cities national ambition to Control Five Legendary Cities

  • Send 20 luxuries is now a tier 9 ambition instead of a national ambition

  • Disciples can now clear vegetation

  • Cannot build an improvement that removes vegetation if the unit cannot clear the vegetation

  • Traders no longer get a court merchant when founding their seat

  • Prevented building improvements on Marsh, except for Farms with Centralization

  • All fresh water sources supply fresh water to their own tile in addition to adjacent tiles

  • Remove Free Silk and Free Ebony bonus tech cards

  • Moved Free Porcelain bonus card to be unlocked by Coinage and reduced tech cost accordingly

  • Free Porcelain and Free Perfume bonus cards now give 2 instances of their luxuries

  • Autonomous Rule project is removed when a city is breached

  • Characters cannot give birth more than once a year (relevant for non-yearly turn scales)

  • Free laws that replace an existing law do not increment the law change count

  • Raiders can capture empty cities and city sites

  • Adjustments to Family Archetype character tendencies:

  • Champions have more Zealots and less Heroes

  • Riders have more Heroes and less Zealots

  • When randomly assigning archetypes, characters with governor effect traits are much more likely to be assigned a governor archetype, and similarly general archetypes for characters with general traits

  • Killing Raiders now contributes towards goals to kill units of their original tribe

  • Raiders are less stubborn about raiding, if the shortest path is blocked, and will hit opportunity targets instead

  • Doubled Master/Elder Scribe money per Citizen, to +2/+4

  • Anchoring and Unlimbering states are not interrupted by attacks that apply new cooldowns (i.e. Immobilize, Stun)

  • Killed civilian units now count for Assyrian orders, Hero Leader Training, Epics Culture, etc

  • Units can pass through hostile civilian units, as long as they don't end their movement on their tile

  • Families and Religions suffer -40 opinion for 20 turns when their Workers and Disciples are killed

  • Improvements to Carthage campaign persistency

  • Increased maximum effect of god opinion on religion opinion in Wrath of Gods scenario (200 -> 500)

  • Reduced Tribal raid range in Wrath of Gods scenario

  • Disabled Venerate mission for and demands being given by Abandoned god in Wrath of Gods scenario

Programming

  • Unity updated from 2022.3 to 6.3

  • Graphics code converted to Unity's Universal Rendering Pipeline

  • The URP upgrade improves graphics performance, letting the game render with fewer draw calls and use fewer shader variants

  • Many UI optimizations

  • Memory leak fixes

  • Improvements to Safe Mode

  • AI border expansion tweaks

  • AI law value correction to avoid frequent changes

  • Better AI legitimacy evaluation

  • AI builds slightly fewer units

  • Updated unity packages (relay and lobby replaced by multiplayer services)

  • Added Latin supplemental characters U+100 to U+17F to Avalon, Trajan and Judson assets, to assist Polish translation mods

  • Added support for bonus cards to use bonus names in tooltips (affects mods only)

UI

  • Families are now shown before Religions on the tab panel

  • Swapped Worker Filters and basic actions panels on Selected Worker UI

  • Valid Improvements, Rural, and Urban worker filters show improvements valid anywhere in the city rather than just for current tile

  • Restart Game button renamed Reroll Game. This keeps the same map and preserves nation/dynasty of random AI opponents but now rerolls the random seed

  • New Map button renamed to Reroll Map. This button is not shown for games on predefined maps

  • End Turn button can now always be clicked on your turn, will cycle to required items if needed

  • Added hotkey for suppressing tooltips (hold Ctrl + X)

  • Added hotkey for extending turn time (Alt-E)

  • Added Reset option when editing hotkeys

  • Added Unimproved Resources overlay to Overlay Customizer

  • Character XP is now shown when they have upgraded at least once but progress to next level is 0

  • Added Peak Legitimacy and Peak Legitimacy per Leader to Hall of Fame (requires regenerating HOF for existing games, won't display on very old saves)

  • Added on-map icon to units that have been disarmed

  • Updated ZOC help text

  • Enabled gold cost to buy yields for recommended improvements tooltip

  • Added color-coding for Send/Return text in Luxury Management

  • Improved consistency of city build production cost tooltips

  • Trait opinion of leader now shown in trait tooltip even without advanced help text

  • Pagan religions are shown in the Adopt State Religion menu even without Divine Rule, with explanatory text

  • Yields from disciples on improvements are shown when disciples are selected

  • Anchor mission help text includes water control range

  • Condensed enlist ability help text

  • Greyed out effect for dead character portraits applied more consistently

  • Improved Settler Found City tooltip

  • Cities with zero yield are included in the nation yield breakdown

  • When a non-server network game has disconnected human players and the turn timer is counting down, a warning is displayed next to the turn time

  • Improvements to Citrus resource, Grove, Ruins and Alter of the Aten models

  • Improvements to Luxury Management display, especially when no luxuries available

  • End Turn button now always active, clicking it will cycle to decisions preventing turn from ending

  • Free improvement bonuses now show as normal event popups first

  • Place improvement overlay not shown while bonus event is active

  • When placing free improvements, ctrl+click is required to replace existing improvements

  • Games with custom victories are skipped for unloaded scenario mods in Hall of Fame

  • Improved fidelity of shadows on high settings

Bugs Fixed

  • Fixed Valid Improvements worker filter

  • Fixed map generation sometimes placing trees under water

  • Fixed Hall of Fame display for scenario custom victories

  • Fixed units passing through hostile civilians cancelling under construction improvements

  • Fixed Dynasty being displayed as "default" with selected Archetype

  • Fixed starting a game with more instances of a nation using a preset leader than existing dynasties for that nation

  • Fixed hotkeys not triggering unit cycling

  • Fixed per citizen generic specialist help text

  • Fixed Timeline screen display issues

  • Fixed Marshes affecting display of adjacent tiles

  • Fixed Rebel units from events sometimes not being assigned to a player

  • Fixed some popup scaling aspect ratio issues

  • Fixed exception during loading of incompatible asset bundles

  • Fixed Coastal Rain Basin boundary mountain range

  • Fixed Hardwood Forest player start position issues

  • Fixed missing clutter materials on Honey groves

  • Fixed opinion graph hover exception

  • Fixed hotkey assignments sometimes incorrectly being labeled as conflicts

  • Fixed inaccurate opinion sometimes showing in city governor tooltip for Grand Viziers

  • Fixed some Chinese text localization issues

  • Fixed stun, immobilize, and panic effects sometimes being applied to units inside cities

  • Fixed events that kill units not incrementing stats and goal counters

  • Fixed temporarily hidden unit pathfinding

  • Fixed some AI unit movement cases where it would trip over itself when there were units in the way

  • Fixed some minor AI combat issues

  • Fixed audio bug that occurred when only one music track was enabled

  • Fixed some unit panel icon issues

  • Fixed some tribal events incorrectly remaining after tribal elimination

  • Fixed Caravan mission button saying that there are no players when out of orders

  • Fixed some cases where city effects were not displayed

  • Fixed boundary tiles in Caucasus on the Old World map

  • Fixed character opinion load/save bugs

  • Fixed family seat icon data bug

  • Fixed State Religion reminder not opening submenu

  • Fixed build specialist tile highlights not showing with border expansion

  • Fixed Foreign Marriage mission in No Events mode

  • Fixed temporarily hidden units sometimes still being rendered for other players

  • Fixed village upgrade turns and improvement help text with Lighthouse

  • Fixed Bulwark Cuirass UI issue

  • Fixed Unyielding Banner reassigning general to non-player units

  • Fixed scores not updating after effectPlayers change

  • Fixed event decisions not getting restored after clearing selection

  • Fixed tutorial videos not showing in the encyclopedia on Linux

  • Fixed missing theology info on tech tooltips

  • Fixed bonus yield text bug

  • Fixed Unit Seen notification not firing if unit becomes visible mid-move

  • Fixed Default Governor bugs

  • Fixed Peaks adjacency requirement being ignored by Clerics on Sand tiles

  • Fixed Encyclopedia display issue

  • Fixed Research UI not showing after renaming landmark

  • Fixed MP games with one human team getting stuck after victory

  • Fixed Ask to Declare War mission helptext

  • Fixed tile tooltip to show improvement defensive modifier in neutral territory

  • Fixed overlay customizer issues

  • Fixed load/save error that was possibly invalidating replay data

  • Fixed scenario selection getting cleared when moving to MP setup screen

  • Fixed Occurrence effects not being removed when ended by an event/bonus (Wrath of Gods)

  • Fixed Veneration jealousy penalty being applied to both religion and god in Wrath of Gods scenario

  • Fixed tech helptext not listing non religion-based project unlocks in Wrath of Gods scenario

  • Fixed Carthage scenario 3 load/save bug

  • Fixed ModManager panel trying to update when not active

  • Text and event fixes

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