Hello and Welcome to another development diary for EU4. This time we take a look at Africa, and the changes there. This one of those times when pictures are worth more than 1000 words.

First of all, we have added the entirety of the Kongo region, reaching up to the Great Lakes area. Not just home to the countries of Kongo, Loango and Ndongo, this area now have multiple nations, and could be the basis of a powerful empire.



While we have added over 20 new nations to Central Africa, we have also added new idea groups and unique ideas for these mighty states, including the Great Lakes ideas for our states near the Lake Victoria. These Central Africans also have their own unique technology group, with technology costing 65% more than Westerners.

North we find the Great Lakes Area, with lots of minor nations, some that still exist today, after a brief period of colonialism.



Southeast of Kongo, is Zambia and Mozambique is now filled with provinces and several new nations as well. Magagascar has also seen a rework, with 5 nations struggling for supremacy of the island, complete with their own national ideas and Pagan/Islamic friction




The tradesetup for Africa have changed as well, Zanzibar is now the coast tradenode, with three inland nodes of Kongo, Great Lakes and Zambezi leading to the coasts either west and east. This makes the Zanzibar node a hugely important tradenode for everyone along the Indian Ocean.




No diary on our Africa changes would be complete without giving some attention to religion in the region. Previously we had carpeted non-specific pagan areas with Shamanism or Animism. Now many of our African provinces which have not converted to Islam are portrayed with the Fetishist Pagan religion which grants greater tolerance to heathens and a diplomatic reputation bonus along with the usual pagan decision.






Next week, we’ll talk about two different and new concepts, one which has its own icon in the top bar.

Read original post with larger images

Useful links
Official Website
Europa Universalis IV Wiki
Developer Diary Archives

Hello and Welcome to another development diary for EU4. This time we take a look at Africa, and the changes there. This one of those times when pictures are worth more than 1000 words.

First of all, we have added the entirety of the Kongo region, reaching up to the Great Lakes area. Not just home to the countries of Kongo, Loango and Ndongo, this area now have multiple nations, and could be the basis of a powerful empire.



While we have added over 20 new nations to Central Africa, we have also added new idea groups and unique ideas for these mighty states, including the Great Lakes ideas for our states near the Lake Victoria. These Central Africans also have their own unique technology group, with technology costing 65% more than Westerners.

North we find the Great Lakes Area, with lots of minor nations, some that still exist today, after a brief period of colonialism.



Southeast of Kongo, is Zambia and Mozambique is now filled with provinces and several new nations as well. Magagascar has also seen a rework, with 5 nations struggling for supremacy of the island, complete with their own national ideas and Pagan/Islamic friction




The tradesetup for Africa have changed as well, Zanzibar is now the coast tradenode, with three inland nodes of Kongo, Great Lakes and Zambezi leading to the coasts either west and east. This makes the Zanzibar node a hugely important tradenode for everyone along the Indian Ocean.




No diary on our Africa changes would be complete without giving some attention to religion in the region. Previously we had carpeted non-specific pagan areas with Shamanism or Animism. Now many of our African provinces which have not converted to Islam are portrayed with the Fetishist Pagan religion which grants greater tolerance to heathens and a diplomatic reputation bonus along with the usual pagan decision.






Next week, we’ll talk about two different and new concepts, one which has its own icon in the top bar.

Read original post with larger images

Useful links
Official Website
Europa Universalis IV Wiki
Developer Diary Archives

Hello and Welcome to another development diary for Europa Universalis IV. This time we take a look at a concept that neither we nor you have not been entirely happy with in any previous Paradox game: Espionage.

In the next major patch, we have completely reworked how espionage works. No longer is every spy action done by just sending a diplomat that will perform the action for as long as it is there, but now there is a concept of spy networks.

You now send a diplomat on a mission to a country to build up a spy network. The network can reach up to 100% power, and that power can be used to execute spy actions, such as sow discontent, fabricate claims, etc.

Spy Offense has been renamed to Spy Network Construction, and determines how quickly you build spy networks in another nation.

Spy Defence has been renamed to “Foreign Spy Detection”, and now determine the chance of detecting hostile network buildups and disrupting it. A disrupted network will lose some of its power, and also make it impossible for you continue improving it for a time period.

Performing an action is instant, and as long as you have the power, success is automatic. However, networks that are not actively built will slowly decay.

You can also target other nations networks with counterespionage, to actively reduce their capabilities of their network.



There are three passive benefits to having a strong spy network in another nation. First of all, if you have the Cossacks expansion and picked the Espionage Ideas, you have access to Study Technology, which is no longer a source of power, but instead a possibility to reduce technology costs by up 30% from having networks in nations ahead of you (the size of the discount depends on how far ahead they are in each tech). Secondly, the new expansion grants up to 20% higher siege ability against nations where you have a spy network. Finally, the new expansion gives you up to 10% less AE in that country.

Of course, all of those scale with the power of the spy network.


Espionage now contains the following actions.

Fabricate Claim: Gives you a claim on an eligible province for a low cost.
Justify Trade Conflict: Gives you a trade conflict CB if conditions are applicable for a low cost.
Support Rebels: Selected rebel faction gets +10% chance to progress towards revolt each month for 5 years for a very high cost. It will also cost a fair amount of cash to support ythe troops.


The following requires the Espionage Ideagroup.

Sow Discontent, applies +3 unrest and reduces legitimacy, republican tradition, devotion or unity for 5 years for a high cost
Infiltrate Administration: Lifts Fog of War over the target country for 5 years for a medium cost.
Sabotage Reputation: -3 diplomatic reputation for 5 years for a medium cost.
Agitate for Liberty: Selected subject has +25 liberty desire that lasts 5 years for a high cost.


There is also four new actions enabled by the new expansion, two of those we’ll tell you about here, two others are for future development diaries.

Sabotage Recruitment: Gives 20% less manpower and Sailor recovery speed for 5 years for a medium cost.
Slander Merchant: Reduces Global Trade Power by 33% for 5 years for a high cost.

Of course actions that require previously expansions will still require those expansions.

Next week we’ll be back with a look at Africa.

Read original post with bigger images

Useful links
Official Website
Europa Universalis IV Wiki
Developer Diary Archives

Hello and Welcome to another development diary for Europa Universalis IV. This time we take a look at a concept that neither we nor you have not been entirely happy with in any previous Paradox game: Espionage.

In the next major patch, we have completely reworked how espionage works. No longer is every spy action done by just sending a diplomat that will perform the action for as long as it is there, but now there is a concept of spy networks.

You now send a diplomat on a mission to a country to build up a spy network. The network can reach up to 100% power, and that power can be used to execute spy actions, such as sow discontent, fabricate claims, etc.

Spy Offense has been renamed to Spy Network Construction, and determines how quickly you build spy networks in another nation.

Spy Defence has been renamed to “Foreign Spy Detection”, and now determine the chance of detecting hostile network buildups and disrupting it. A disrupted network will lose some of its power, and also make it impossible for you continue improving it for a time period.

Performing an action is instant, and as long as you have the power, success is automatic. However, networks that are not actively built will slowly decay.

You can also target other nations networks with counterespionage, to actively reduce their capabilities of their network.



There are three passive benefits to having a strong spy network in another nation. First of all, if you have the Cossacks expansion and picked the Espionage Ideas, you have access to Study Technology, which is no longer a source of power, but instead a possibility to reduce technology costs by up 30% from having networks in nations ahead of you (the size of the discount depends on how far ahead they are in each tech). Secondly, the new expansion grants up to 20% higher siege ability against nations where you have a spy network. Finally, the new expansion gives you up to 10% less AE in that country.

Of course, all of those scale with the power of the spy network.


Espionage now contains the following actions.

Fabricate Claim: Gives you a claim on an eligible province for a low cost.
Justify Trade Conflict: Gives you a trade conflict CB if conditions are applicable for a low cost.
Support Rebels: Selected rebel faction gets +10% chance to progress towards revolt each month for 5 years for a very high cost. It will also cost a fair amount of cash to support ythe troops.


The following requires the Espionage Ideagroup.

Sow Discontent, applies +3 unrest and reduces legitimacy, republican tradition, devotion or unity for 5 years for a high cost
Infiltrate Administration: Lifts Fog of War over the target country for 5 years for a medium cost.
Sabotage Reputation: -3 diplomatic reputation for 5 years for a medium cost.
Agitate for Liberty: Selected subject has +25 liberty desire that lasts 5 years for a high cost.


There is also four new actions enabled by the new expansion, two of those we’ll tell you about here, two others are for future development diaries.

Sabotage Recruitment: Gives 20% less manpower and Sailor recovery speed for 5 years for a medium cost.
Slander Merchant: Reduces Global Trade Power by 33% for 5 years for a high cost.

Of course actions that require previously expansions will still require those expansions.

Next week we’ll be back with a look at Africa.

Read original post with bigger images

Useful links
Official Website
Europa Universalis IV Wiki
Developer Diary Archives

Hello everyone, and welcome to another Europa Universalis development diary. We are now working fully towards 1.16 and our next big expansion. While I’ve always been the lead designer for EU4, I’m now the project lead for this expansion, as Wiz has moved to another project.

One of the biggest changes in concept is the introduction of sailors. Sailors represent the trained seamen of a nation. Sailors differ from manpower both in what they are used for, and in how you get them. Only coastal provinces provide sailors, and the amount of sailors depend on total development in that province. Sailors are required when constructing new ships, and when ships are “repaired”. Of course not all ships require the same amount of sailors, with heavy ships needing the most and transports the least.

Docks and Drydocks now provide 50% and 100% more sailors from their provinces instead of increasing forcelimits, while Shipyards and Grand Shipyards have been redesigned to increase naval forcelimits & decrease shipbuilding times in those provinces.

Natural Harbours and Coastal Trade Centers increase the amount of sailors you get from a province, while Merchant marine now gives +50% Sailors & Press Gangs now give +20% Sailor Recovery. Some nations also have ideas giving them more Sailors from their provinces with Netherlands and Norway having the biggest boosts at +25%. There are also policies, parliament issues & norse gods boosting your sailor pool as well.




If you have the expansion, you also gain sailors from occupying another nation’s coastal provinces, even if your maximum possible pool is not increased.

One of the most feared things in europe in this time-period was the arrival of slave raiders from the north african coast. Countless villages were razed and millions of europeans were sold in slavery in Algiers, Tunis, Tripoli & Istanbul until the European nations were finally able to stop it at the middle of the 19th century by simply conquering the North African coast.

Now Barbary Nations lose their 10% cheaper ship tradition, and they gained the ability to raid for slaves. Raiding for Slaves is now something fleets can do at sea, where they gain money and sailors from coastal provinces that are not their allies or subjects. To raid a coastal province, you need be able to blockade it with that fleet, and you can only raid a province once every ten years. The efficiency of raiding is reduced by fleets on pirate hunting patrol. Raiding of course hurts your relation with the owner of provinces you raid.

The reason for why you get sailors from raids, is that plenty of them historically ended up chained to an oar at a galley.





Next week, we’ll take a deep look at how we have redesigned the espionage system.

[Click here to read the original post with larger images]

Useful links
Official Website
Europa Universalis IV Wiki
Developer Diary Archives

Hello everyone, and welcome to another Europa Universalis development diary. We are now working fully towards 1.16 and our next big expansion. While I’ve always been the lead designer for EU4, I’m now the project lead for this expansion, as Wiz has moved to another project.

One of the biggest changes in concept is the introduction of sailors. Sailors represent the trained seamen of a nation. Sailors differ from manpower both in what they are used for, and in how you get them. Only coastal provinces provide sailors, and the amount of sailors depend on total development in that province. Sailors are required when constructing new ships, and when ships are “repaired”. Of course not all ships require the same amount of sailors, with heavy ships needing the most and transports the least.

Docks and Drydocks now provide 50% and 100% more sailors from their provinces instead of increasing forcelimits, while Shipyards and Grand Shipyards have been redesigned to increase naval forcelimits & decrease shipbuilding times in those provinces.

Natural Harbours and Coastal Trade Centers increase the amount of sailors you get from a province, while Merchant marine now gives +50% Sailors & Press Gangs now give +20% Sailor Recovery. Some nations also have ideas giving them more Sailors from their provinces with Netherlands and Norway having the biggest boosts at +25%. There are also policies, parliament issues & norse gods boosting your sailor pool as well.




If you have the expansion, you also gain sailors from occupying another nation’s coastal provinces, even if your maximum possible pool is not increased.

One of the most feared things in europe in this time-period was the arrival of slave raiders from the north african coast. Countless villages were razed and millions of europeans were sold in slavery in Algiers, Tunis, Tripoli & Istanbul until the European nations were finally able to stop it at the middle of the 19th century by simply conquering the North African coast.

Now Barbary Nations lose their 10% cheaper ship tradition, and they gained the ability to raid for slaves. Raiding for Slaves is now something fleets can do at sea, where they gain money and sailors from coastal provinces that are not their allies or subjects. To raid a coastal province, you need be able to blockade it with that fleet, and you can only raid a province once every ten years. The efficiency of raiding is reduced by fleets on pirate hunting patrol. Raiding of course hurts your relation with the owner of provinces you raid.

The reason for why you get sailors from raids, is that plenty of them historically ended up chained to an oar at a galley.





Next week, we’ll take a deep look at how we have redesigned the espionage system.

[Click here to read the original post with larger images]

Useful links
Official Website
Europa Universalis IV Wiki
Developer Diary Archives

Hello everyone, today we’ll start talking about 1.16 and what it will contain. The development team is busy working on 1.15.1 at the same time, which we hope is out ASAP.

One of the fun part of working on the Europa Universalis series over the last decade has been the constant evolvement of the map. Today we’re proud to announce some of the map changes for 1.16, with a quick look of Europe.

Ireland in Crusader Kings II is known as tutorial island, as an entire game in itself. In EU so far, ireland have not been properly represented, and more been shown as poor as it became after a long time of english rule. Now Ireland is richer in 1444, and not just a quick conquest for England within 5 years. Ireland also have 9 provinces, where it had five before, and several new interesting nations to play.




We’ve also tweaked the map to better borders and provinces in Hungary, and I hope you’ll enjoy this setup.


We also made a complete overhaul of how cultures work to remove the ties to language, and tie them more together to similar cultures, to create more historically plausible countries and relations.



Now, for some community fun, try to find as many changes on the map compared to 1.15 in this screenshot and list below!



Next week I’m back talking about a new concept that is getting in the game for 1.15, which can be seen in the topbar on these screenshoys.

Click here to read the original post with larger images

Useful links
Official Website
Europa Universalis IV Wiki
Developer Diary Archives

Hello everyone, today we’ll start talking about 1.16 and what it will contain. The development team is busy working on 1.15.1 at the same time, which we hope is out ASAP.

One of the fun part of working on the Europa Universalis series over the last decade has been the constant evolvement of the map. Today we’re proud to announce some of the map changes for 1.16, with a quick look of Europe.

Ireland in Crusader Kings II is known as tutorial island, as an entire game in itself. In EU so far, ireland have not been properly represented, and more been shown as poor as it became after a long time of english rule. Now Ireland is richer in 1444, and not just a quick conquest for England within 5 years. Ireland also have 9 provinces, where it had five before, and several new interesting nations to play.




We’ve also tweaked the map to better borders and provinces in Hungary, and I hope you’ll enjoy this setup.


We also made a complete overhaul of how cultures work to remove the ties to language, and tie them more together to similar cultures, to create more historically plausible countries and relations.



Now, for some community fun, try to find as many changes on the map compared to 1.15 in this screenshot and list below!



Next week I’m back talking about a new concept that is getting in the game for 1.15, which can be seen in the topbar on these screenshoys.

Click here to read the original post with larger images

Useful links
Official Website
Europa Universalis IV Wiki
Developer Diary Archives

This is a bug fixing and balancing patch for Cossacks/1.14. It should be save game compatible with 1.14 saves, but you may experience issues with discovery of provinces due to the spread of discovery rework, and as always, compatability is not guaranteed. If you do not want to risk your Ironman games, use the 1.14 steam branch available under 'betas' on 'properties'.

Click here for full patch notes

This is a bug fixing and balancing patch for Cossacks/1.14. It should be save game compatible with 1.14 saves, but you may experience issues with discovery of provinces due to the spread of discovery rework, and as always, compatability is not guaranteed. If you do not want to risk your Ironman games, use the 1.14 steam branch available under 'betas' on 'properties'.

Click here for full patch notes