Patch 2.1.X are all patches beginning with 2.1.

Patch 2.1

Patch 2.1.2

Patch 2.1.2 was released on the 9th of April, 2014[1].

Major

Memory optimizations (Graphical DLCs)

Minor

Fixed a bug where allies could be called into certain Major Revolts by attackers, resulting in some erroneous vassalizations at the end of the war.

Temporary titles no longer increase the multiplier for Decadence gain if they are the character's highest tier title.

Hunts and Fairs should now be more interesting.

Hunts and Fairs should no longer give you bundles of events on the same day.

Hunts and Fairs should now almost always fire at least one event.

Tournaments will now end properly after all winners are chosen.

Fixed a bug where an adventure would declare war ahead of time.

Asking to join a crusade is no longer limited by the distance to the religious head.

Arrange Marriage no longer shows people with a different caste if you're Hindu.

Now possible to search for trait names and last names in character finder.

Spouse no longer likes you less if you have a different caste.

Fixed a bug where decadence would be incorrectly reset when resigning.

Fixed a bug where you couldn't grant county titles to Hindus even if they would have their barony become the primary holding in that province.

Fixed a bug where you couldn't grant lower titles of the incorrect type.

Fixed a bug where you could designate dead heirs.

Ruler designer costs improved for balance.

Fixed a bug where commanders could be offered marriages which they would accept.

Fixed a bug where the pope would be listed as your best candidate.

Fixed a bug where the guardian would its wards far away with them.

Fixed a bug where characters of special interest would be cleared upon inheritance.

The Robin Hood event series should no longer fire more than once per campaign.

Fixed some issues with the Aztec invasion.

Made Buddhist ambitions easier to fulfill.

Added religion triggers for certain nicknames.

Fixed a number of minor text bugs.

Celibate characters should no longer be worried about their conjugal lovelife.

Added/changed some trait*based opinion modifiers.

Made Mount Athos an Orthodox holy site instead of Piraeus.

Bogomilist women can now be appointed as court chaplains.

Homosexual characters can now have the "get married" ambition again.

Tweaked various factors affecting whether AI chooses the "get married" ambition.

Fixed a bug with the decadence "straighten up" action.

Fixed a bug where characters sacrificed to Kali would mysteriously survive.

Blocked some ambitions for court gurus.

Fixed a bug that gave Indian provinces way too much revolt risk from certain events.

Fixed an issue with the timing of events at Indian feasts.

Fixed an error with flag clearing at Furusiyya and Epic Tournaments.

Fixed several event triggers that failed to correctly check a character's location.

Applying history backwards was working incorrectly.

Fixed a bug where you wasn't able to reform pagan.

Fixed a bug with the allow_laws console command

Now allowed to arrange marriages regardless of diplomatic range if you have a courtier who is betrothed to someone in the target's court

The Messalian heresy now has access to Absolute Cognatic Succession

Now allowed to assign a leader to a flank without one regardless of crown authority

Fixed a bug with lover event 64065

Fixed a bug with the vassal king opinion penalty being applied multiple times

Fixed a bug where you couldn't arrange marriages as a child.

No longer costs any piety to banish if one has a valid reason.

Banishment description shows the cost to banish.

Games already in progress no longer show up on the server list.

Ransom interaction no longer distance limited.

Fixed some issues with the Samrat Chakravartin decision. It should now be much more attractive for the player.

Removed an exploit with muslim schools and tech points.

Fixed a bug with temporary revolt titles and certain achievements.

Fixed error in troop amount trigger causing horse archers to get elephant tactics.

Added missing localization for jungle terrain combat effect tooltip.

Indian temple corruption and local death cults are now immediately removed if province owner is of a non*Indian religion.

Fixed a bug which sometimes prevented the player from building some holdings.

Updated so all light cavalry based tactics affect camel cavalry as well

Fixed invalid patrician trade post cost calculation

Nestorians can now only appoint landed bishops as Autocephalous Patriarchs (court chaplains)

Fixed so technology gives bonuses to some special troops

Improved the logic of bribing people into plots.

Adapted pilgrim events to include Messalian and Paulician heresies.

Fixed a bug where the usurp button for kingdoms usurped vassals as well

AI

Will only ask vassals or below to "Straighten up"

No longer possible for AI to plot to assassinate self (unless they are a lunatic)

AI can now start Claimant factions again

Interface

Holy Warrior has a better effect description.

Fixed a case where righteous imprisonment alert was shown even though imprisonment wasn't available.

Piety name fixed in ledger.

Piety name fixed in religion view.

Piety name fixed in law view for Muslims.

Piety name in casus belli selection for declare war diplomacy.

Piety name in score description fixed

Piety name in end of combat/battle dialog fixed.

Cursor offsets for character finder.

Autosave to cloud no longer open main menu upon completion.

Find province window updated.

Character selection could show a wrong CoA for lowborn.

Piety name fixed in execute interaction.

Clients no longer show "waiting for server id"

Ransom button in intrigue view disabled when the employer can't/won't ransom the person.

Fixed invalid text shown for special troops in commander traits

Fixed moral authority tooltip for indian religions.

Fixed upside down CoA's on map for versions using OpenGL

Added missing top bar extension for Indian republics

Added missing jungle terrain picture

Vassal tab shows patricians as patricians now

Fixed another [Player.Religion.GetPietyName] localization issue

Modding

Renamed cost to ruler_designer_cost for trait age costs.

ruler_designer_cost now forces the cost instead of applying an offset.

Added a check for characters holding titles before they were born.

Error log now alerts for any duplicate landed titles.

Fixed a bug with the event filter 'only_independent' and revolters

Database

Made a number of changes to starting characters and dynasties, above all in Northern India.

Ruler of Agen in 987 is now shows as the bishop he is.

Patch 2.1.3

Patch 2.1.3 was released on the 11th of April, 2014[2].

Minor

Fixed broken MP from v2.1.2

All Muslim rulers are now notified and given an imprisonment reason when a dynasty member refuses to straighten up

Added a notification event when a dynasty member goes decadent

Only Kshatriya women are generated in feudal Indian courts

Can no longer pick the "Excommunicated" trait in the ruler designer

Fixed a bug where dead characters could get the wrong liege set

Fixed bug where the "Become King" ambition would abort due to holding a temporary revolter kingdom

Interface

Added better text when losing decadence from a title grant

AI

Adjusted to care more about Caste for marriages

Patch 2.1.4

Patch 2.1.4 was released on the 28th of April, 2014[3].

Major

Fixed broken MP from v2.1.2, for real

Minor

Save games now written to virtual memory before writing them physically to improve stability.

Some trait cost fixes, all trait costs lowered.

Can no longer press the create Hungary button multiple times.

Fixed a bug where spouses were no longer allies.

Fixed a bug where you could assimilate into revolt titles.

Fixed a bug where revolting as a patrician could give you the wrong government type.

Indian holy orders can now fight other indian religions.

Interface

Updated heir description for piety name in dynasty view.

Updated interaction description for piety name in interaction view.

Can no longer press the red skulls of people killed by rabble.

Bug Fix where realm view used to show demesne incomes instead of tax incomes.

Fixed a bug where marriage notification showed that a character was marrying himself.

Title and CB selection in diplomatic interactions now gets sorted by CB type and title name.

Added icons for the Order of Addai.

Modding

spawn_unit matchmul no longer counts in event spawned and mercenery units.

Added hostile_within_group flag for religion groups which decides if holy orders will fight other religions within the same group.

Patch 2.1.5

Patch 2.1.5 was released on the 30th of June, 2014[4]. Highlights are:

new launcher shared between Mac, Linux and Windows, allowing for instance to download steam workshop mods without the need to restart the game

Ironman now only saves every 6 months

memory usage has been reduced quite a bit

heaps of bugs fixed.

Major

Fixed crash after changing savegame directory with the delete save dialog open

Minor optimizations

Ironman now autosaves once every 6 months rather than every month

Fixed crash where AI would evaluate religious elector titles when you didn't have Sons of Abraham

Fixed OOS regarding battle chokepoints.

Optimized AI for elector titles for religions

Optimized so interface should seem smoother at all times, less stuttering

Fixed a bug where wars against vassals would not start properly, and freeze any plot related to that war.

Fixed crash when you hover over dead characters religion icon

Fixed CTD when AI is evaluating targets

Fixed issue where taking the last county from the Pope would not properly give its baronies to the winner.

Fixed issue where taking the last county from the Pope ended his Crusades.

Texture memory usage has been optimized, this should result in far lower memory useage, both on the graphics card and RAM.

Even more memory usage optimization, reduced memory usage growth over time.

Fixed issue where temporary revolt titles got inherited by characters outside the revolt. ( Old saves affected by this should also be repaired )

Fixed issue where vassals under a temporary revolt title got independent on Liege's death.

Fixed issue where vassals with a liege in a revolt could create new higher tier titles and become independent of the original liege when the revolt ended

Fixed issue where a vassal got independent when they joined a rebellion outside the realm of its liege.

Minor

Holding Alt and left-clicking while a unit is selected will no longer make that unit un-selectable.

The Third Temple in Jerusalem is now completed even if the ruler who ordered its construction dies.

Fixed an error in the German text for the completion of the Third Temple.

"Great Indian Sultanate" and "Looking East and West" achievements now work even if Rajastan has become a part of the Empire of India.

Fixed an issue with the allow triggers for Kali Puja.

Plots to revoke vassal titles no longer resets when not supposed to.

Resolved issue were the educate child interaction would not auto suggest a guardian.

Now properly resets the de facto liege of revolt vassals when the revolt ends inconclusively.

Revolt wars now end when the provinces in revolt gets vassalised by another leader.

Horse archers no longer use the Norse horse archers model as default.

Fixed a bug where AI characters would not go on pilgrimages.

No longer shows the order of a character's wife in the opposite order.

The event to become Saoshyant no longer requires non-existing duchies.

Game no longer crashes on death if the diplomacy view is opened.

Fixed bug where a revolt Casus Belli became invalidated when it was not supposed to.

Kingdom of Jerusalem's duchies can no longer be assimilated by other kingdoms

Fixed small issue with logging incompability with launcher.

Fixed freezing of plot when surrendering to a war to revoke a vassal title.

Resolved issue with offering to educate children where the liege of the child was automatically assigned as a tutor instead of you or one in your realm.

Fixed bug where rulers got vassalised when they lost a claim war even though they had vassals outside the contested title.

Zoroastrian vassals now only consider liege marriages as divine if they are truly close kin.

Fixed issue where the pope would always grant divorces as the marriages where wrongly considered a consanguinity.

Fixed English localisation of Hellenic priests, training grounds and mustering grounds.

Changed the "Become King" ambition to be called "Become Queen" for female rulers.

Changed font for changing language in the settings menu to match fonts used for other settings.

Resolved issue where thumbs up and thumbs down icons when browsing the list of claimants did not match if they could be invited to court or not.

Fixed bug for Muslim rulers where your latest wife was set as your First Wife, instead of the wife you first married.

Fixed bug where AI republic characters with other titles did not build trade posts.

Fixed bug where the graphic for special units changed when merged with troops of another culture.

Resolved issue where Muslim male characters could not get married if betrothed to a minor.

Fixed issue where revolt occupations were removed when another revolt claimed the contested title.

Improved AI decision-making for inviting vassals to celebrate Ramadan.

Faction backers are now removed from the faction upon death.

Now properly shows the special unit icon in the reorganize unit view.

Now properly updates holy sites for Muslim religions.

Added missing localisation for coa_plain_pagan and coa_plain_indian.

Modified decisions, achievments and events for Indian empires to also trigger for the empire of India.

Your spymaster can now properly persuade other nobles to join your faction.

Fixed a bug where characters were having their tutor reassigned from the tutor the player had picked for them

Muslim Special Troops now use the Muslim Horse Archer model, rather than the Western Light Cavalry model

Fixed issue where a character would not be counted as incapaciteded or pilgrim after loading a savegame

Fixed a minor bug with the white elephant events.

Fixed a bug with scheming regents sometimes not stopping their schemes if they lost their original target.

Vassals can no longer participate in the same war as their lieges, except in Crusades or when fighting the liege in a rebellion.

Lieges can now offer to join vassals wars when they are pressing a claim outside of the realm, replacing the vassal as participant.

Jewish buildings and retinues no longer need Jewish religion, only Israelite culture group.

Added Nubian cultural retinue and building.

Pagans can now raid and use holy orders against each other.

Fixed a bug that made it possible for a player to activate several pilgrimages at once.

Costs for pilgrimages fixed.

"What Schism?" achievement now correctly uses Constantinople and not Thrace province in trigger.

Fixed a bug in the trigger for the "Visit Mount Athos" event.

Fixed a minor bug with an opinion modifier in the Jeanne d'Arc events.

Changed 'Have a Son' and 'Have a Daughter' ambitions to work properly with the gender of the character.

Ghanan band and Ghilman merc compositions are no longer naval.

Saint Addai holy order is no longer available before the event chain enables them.

AI

Fixed a bug where the AI would repeatedly raise and disband holy orders.

Fixed several 'blockers' where the AI would not use Holy Orders in situations where it made sense for them to do so.

Fixed a bug where the AI would repeatedly raise and disband its vassal levies.

Fixed a bug where the AI would ignore small rebel stacks that were moving around.

Fixed an issue with separated seazones that was breaking AI when trying to invade by sea.

Fixed an issue with invasions where AI would repeatedly raise and disband ships.

Fixed an issue where the AI would not bring home armies at the end of a war.

Fixed a 'bouncing' issues with armies moving to besiege provinces.

Converter

Converter missing cultures should now be fixed

Invalid icons for converter should now be updated to latest version of eu4

Fixed another crash in converter associated with major revolt titles.

Fixed crash from temporary titles

Fixed indian cultures.

Fixed invalid religion icon for jain

Interface

Improved cardinal appointment score text and interface a tiny bit

Changed the law tab for republics so that they now properly show the expected successors.

Religion view for Jewish characters no longer displays Catholic specific buttons or the pagan reform button.

Changed message sent when liege takes over a war to include the vassal's name, instead of "yours".

Added missing localisation for Slavic, Baltic, Aztec, Mazdaki and Manichean religions.

Now properly show holy sites in the religion tab for all religions except for religions with either antipopes or autocephaly.

Fixed localisation for Rabbis in religion tab.

Character browser can now filter on religion and culture as well as religion and culture group

Titles in diplomatic interactions no longer sorted.

Modding

demesne_size modifier is now possible to set in laws

Added demesne_size modifier (incremental, not multiplicative)

Added local_speed_modifier

PAPAL_SUCCESSION_PASS_ON_HOLDINGS to defines

PAPAL_SUCCESSION_LOSE_MINOR_TITLES to defines

Split ARMY_LOAD_UNLOAD_MOVE_COST into two separate defines

Added on action on_create_title

Added on action on_settlement_looted

Added on action on_navy_returns_with_loot

Added on action on_new_holder_usurpation

Added on action on_new_holder_inheritance

Added on action on_new_holder

Added <religion>_opinion for Hindu, Jain, Buddhism, Indian, Orthodox, Pagan and Aztec

Added moddable opinion for brother

Added moddable opinion for half-brother

Added moddable opinion for sister

Added moddable opinion for half-sister

Added moddable opinion for grandfather

Added moddable opinion for grandmother

Added moddable opinion for grandchild

Added moddable opinion for uncle

Added moddable opinion for aunt

Added moddable opinion for nephew

Added moddable opinion for niece

Untangled and made cardinal election moddable

Now possible to mod papal succession to not lose holdings or minor religious titles

Added dynasty_head scope

Added history command disallow_random_traits

Added set_graphical_culture effect

Added effect scope any_allied_character

Added effect scope random_allied_character

Added remove_nickname effect

Added is_variable_equal trigger

Added is_looting trigger

Added is_looting_in trigger

Added num_of_max_settlements trigger

Added num_of_empty_holdings trigger

Added borders_major_river trigger

Added trigger is_allied_with

Added trigger scope any_allied_character

check_variable trigger now take a scope or second variable as a right-side argument

Added subtract_variable, multiply_variable and divide_variable effects

All variable effects now take a scope or second variable as right-side argument

Patch 2.1.6

Patch 2.1.6 was released on the 2nd of July, 2014[5]. It's a small hotfix for some problems that should have been in the last patch.

Major

Entire Iranian culture group now uses Persian Units and Portraits

Minor

Light Cavalry now gets its intended defense bonus from tech