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CK3 Dev Diary #33 - An Offer You Can’t Refuse

Hello everyone and welcome to the 33rd CK3 Dev Diary!

I’m Matthew, one of the Programmers on the CK3 team, and today I am going to talk to you about the overhaul we’ve done to Feudal Contracts since Dev Diary 17.

A quick refresher on what Contracts are: every vassal above baron tier has an individual contract between them and their liege which affects how much the vassal gives to the liege in terms of tax and levies in exchange for the liege’s protection. In the case of Feudal vassals, this contract can be renegotiated.

We were not fully content with the initial implementation of this setup as it did not help facilitate the drama and storytelling of the deals made between a vassal and their liege and the disagreements that could arise from that. This was a view shared among the community as well which reinforced our desire to give this feature another look, so a couple of our designers and I gave it an overhaul.

The Contract
You may have seen screenshots or videos of this system in some of the media released from our press events but I’m gonna take you through the new system step by step, so without further ado here is the new interface you’ll see when you interact with a vassal’s feudal contract.

ContractView.png

[Feudal contract negotiation screen]

As you can see there are a lot more options now to tailor the contract.

Going from top to bottom you can see that we have split the base tax and levy obligations into two separate tracks each now with five options. These are the core base of how much taxes and levies are given to the liege, the lower they are the more your vassal will like you, of course, and the higher they are the less content they will be.
When negotiating a new deal you can only move to adjacent levels of the tax and levy obligations.

Below that we have what we call the “Fine Print” options. These fine options are unlocked via various innovations and provide various modifications to the contract.
The first row being the Special Contract options of Scutage, March, and Palatinate which are available for vassals that are Dukes or Kings.

Scutage.png

[Effects of scutage]

March.png

[Effects of march]

Palatinate.png

[Effects of palatinate]

At the bottom we have the rest of the Fine Print options available, these are things like guaranteeing your vassal a spot on the council or granting them coinage rights. Some options are only shown if the vassal meets specific conditions, for example if the vassal is of a different faith to the liege. In such a case the “Religious Protection” gives them special rights to practice their faith without risk of the liege demanding their conversion or converting the faith of their provinces.

The Negotiation
When negotiating the contract a max of three changes may be made. We experimented with different values and this felt like it wasn’t too limiting whilst also letting you too wildly change your contract in one go.

With the new obligations that can be changed and enacted this allows you to negotiate a more interesting deal. For example, you as the liege may want to increase the amount of taxes your vassal gives you, but just doing that alone will be viewed as unfair by the vassal and increase your tyranny.

NegotiationTyranny.png

[a contract proposal giving tyranny]

So if you don’t want to take that tyranny hit then you need to look at what changes you can propose that the vassal will want, so in exchange for these increased taxes you could guarantee your vassal a spot on the council meaning you can now enact this deal without being viewed as a tyrant.

NegotiationFair.png

[a contract proposal with a fair trade]

Alternatively, if you have a hook on your vassal then you can use that hook to count as one free change in favour of the vassal, so you can use your hook and get those higher taxes without having to give any other concessions and not be viewed as a tyrant. Blackmailing people is surprisingly effective.

NegotiationHook.png

[a contract proposal using a hook to avoid tyranny]

It is worth mentioning that even if you propose a “fair” trade that does not give you tyranny this does not mean that the vassal will be perfectly content. There is an opinion change tied to each obligation and what status it is in, vassals will tend to dislike paying more and like paying less, and this opinion modifier will be present in the vassal’s view of their liege.

The vassal themselves can of course also negotiate the contract, they have the added restriction that they must offer their liege an even trade. So they cannot ask to pay lower taxes without using either a hook or agreeing to give the liege something they would want, be that giving more levies, agreeing to stay with only partition succession, or giving up a benefit they have previously been given such as that guaranteed council spot.

Some vassals start with contracts different to the default, in the Holy Roman Empire all vassals start with low taxes and levies to represent the internal state and the lower amount of control the Emperor was exerting over their vassals at the time.

We really wanted the interface to make this feel like an actual paper contract being signed between the liege and the vassal, thankfully we had this beautiful parchment background and wax seal shader lying around that helped spice it up.

Modding Contracts
All of these different obligations, their effects, how the AI uses them, and how they are shown in the UI is controlled in the script files so you can mod in or change existing obligations to your heart’s content.

Code:
religious_rights = {
    display_mode = checkbox

    is_shown = {

        NOT = {

            scope:vassal.faith = scope:liege.faith

        }

    }

    obligation_levels = {

        religious_rights_none = {

            default = yes

            

            ai_liege_desire = @ai_standard_liege_desire

            ai_vassal_desire = 0

        }

        religious_rights_protected = {

            is_valid = {

                NOT = {

                    scope:vassal.faith = scope:liege.faith

                }

            }

            parent = religious_rights_none

            

            vassal_opinion = 5

            

            vassal_modifier = {

                county_opinion_add = 5

            }

            

            flag = religiously_protected

            

            ai_liege_desire = 0

            ai_vassal_desire = 10

        }

    }
}
Here we have the script database entry for the religious protection obligation type, it demonstrates the various options and should be fairly self explanatory in its naming of the options.

I hope you’ve all enjoyed this dev diary and are excited for the new Feudal Contracts and the more options and interactions they can provide between vassals and lieges!

We look forward to seeing you next week, in the meanwhile if you want to chat more then I highly recommend joining our CK Discord Server as well!

Pets of the Dev Team
On the Crusader Kings 3 team we are of course very big fans of animals and pets of all kinds. So I thought to cap off this dev diary, and give you all some much needed cuteness overload during these difficult times in the world, I'd collect a bunch of pictures of all our wonderful pets, fluffy or otherwise!

Pet17.JPG

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Pet4.png
Pet5.png
Pet6.png
Pet7.png
Pet8.png
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Pet15.png

Pet16.JPG
 
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Looks good. Really, really good.
 
How do hooks work on players in MP though? Does it auto-accept the deal for them?
Hooks cannot be refused, no matter who is the target or the puller. In this context, it just means that the vassal can make one extra favorable change, or the liege can make one more change without tyranny.
It doesn't autoaccept, but if you do not do what the hook tells you to do that you will receive a general negative opinion from everyone that is relative to the strength of the hook they have upon you. A fabricated lie is of course going to be a lot less harmful than the revelation that you have been pounding your sister and the heir to the Kingdom everyone thought was from your wife is actually the inbred spawn of Satan.
You're thinking of Blackmail - Blackmail can be refused, but if you don't refuse it, the blackmailer gets a hook, and when that hook is used, at that time, you no longer have the option to refuse.
 
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Will there be an option to become independent if you have low enough obligations? Say a Duke has zero obligations to his king, so when the king dies the Duke has the option us to drift his ducky away in a peaceful independence?
 
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(Red) I hope you guys managed to make the AI smarter with that. I wouldn't want to see a 21-Stewardship and 5-Intrigue vassal forcing his way to become my Spymaster...

(Blue) Well, it seems there WILL be a micro problem as soon as someone starts playing in the HRE in 1066. There are lots of count vassals there! A contract template would indeed be useful here.

(Extra) I have a question: regarding Holy Wars and the likes (supposing they were kept the same from CK2) - will I have to sign a contract with EVERY new Count I put in the new, ruler-less land and a new one when I promote one of them to be a duke or does the game gives you the option to not produce a contract until all is set and done?
all new vassals of any level are given a default middle ground contract that you may then change if you so desire
 
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I really like this system, but it also raises all sorts of edge case questions.

One that I haven't seen brought up yet in the thread: let's say I have a vassal with Religious Protection in his contract, and I want to get rid of him. Can I just impose a "fair" modification that gets rid of the Religious Protection in exchange for lower taxes, and then immediately afterwards revoke his title for being the wrong religion? I'm a bit worried that, if this is possible, Religious Protection will be sort of an empty promise.
you can only change a contracl for a vassal once per lifetime so untill either you or the vassal dies you wont be changeing said contact
 
We really wanted the interface to make this feel like an actual paper contract being signed between the liege and the vassal, thankfully we had this beautiful parchment background and wax seal shader lying around that helped spice it up.
While it does look pretty and helps immersion a lot, I can't help feeling a bit nervous about scalability when I see lovingly crafted interfaces like this.

So... will it support scrollbars if, for example, a mod decides to add 20 more checkboxes? n_n
 
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This looks really interesting. I hope Eu5 will have really interesting vassal system too in the future. Overall Ck3 looks promising. Really anticipating it.
 
you can only change a contracl for a vassal once per lifetime so untill either you or the vassal dies you wont be changeing said contact
What I'm curious about is if that's a mutual limit - that is, if I as a vassal make fair changes to my vassal contract before my liege has a chance to, does that block the liege from making changes until one of us dies? Or more likely, as long as the changes are zero-sum, can the other party just change them back to maintain status quo?
 
Love the idea but it looks like it could become tedious in large realms. I don't think it should be required to have blackmail on every count in the Emperor's realm if he wants to institute a single notch higher taxes across all his vassals.
 
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Love the idea but it looks like it could become tedious in large realms. I don't think it should be required to have blackmail on every count in the Emperor's realm if he wants to institute a single notch higher taxes across all his vassals.
That's when you group all these counts under one vassal duke
 
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Perhaps the special contracts and fine print options should be locked so that they can't be removed by the liege without a hook or tyranny, and likewise, the vassal cannot demand them without a hook? If they can be mutually freely negotiated, it seems like they won't be very binding.

EDIT: For this, of course, the special rights (such as coinage rights) should be separated from special restrictions (such as forced partition), with of course liege-vassal powers reversed for the the restrictions (so that a liege can only demand the restrictions with a hook or tyranny, but a vassal can offer to take that restriction in return for something else).
 
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Most realms are always going to have lots of counts for which you can't create a duchy since you don't own enough of the de jure land. And transferring vassal counts to be under non-de jure dukes is so icky.
Well, when you play as a feudal lord, you have to deal with feudal vassals.
 
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Well, when you play as a feudal lord, you have to deal with feudal vassals.

At the same time, when a king declared a general tax increase to pay for e.g. a war, he was certainly disliked but a -200 tyranny penalty for having 10 vassals seems a bit much.
 
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Most realms are always going to have lots of counts for which you can't create a duchy since you don't own enough of the de jure land. And transferring vassal counts to be under non-de jure dukes is so icky.
If you have dozens of count vassals because you can't lump some of them together under a duchy, you know where to expand next :p

Edit: Also, they're counts. Not dukes or kings. If you are big enough to have a lot of them, it probably doesn't really matter if they have Normal or High taxes
 
At the same time, when a king declared a general tax increase to pay for e.g. a war, he was certainly disliked but a -200 tyranny penalty for having 10 vassals seems a bit much.
Well, that can be done by taking appropriate lifestyle perks, rather than permanently altering the feudal contracts that bind your vassals for generations. For a large-scale reformation of feudal obligations, a lot of effort is to be expected.
 
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That value is the opinion modifiers directly from the contract options, so the +5 there is coming from the fact he still has low levies which gives a +5. The tyranny is then separate from the contract's obligations but because you gave an unfair one.
Could probably clear up that is not Duke Otto's opinion of you overhaul but the modifier sum from the obligations picked, will note that down.

Maybe the info is present elsewhere, but it should be the overall change in opinion, no?
 
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I hope this is not only for the Holy Roman Empire but for all post-Carolingian lands. Matter in fact, in 1066 the French king had less influence in his realm than the emperor in his. HRE in 1066 is not the same as the HRE in 1600
I agree, the difference for the HRE should not be made with standard lower taxes and levies. Instead the difference should be made with more marches (like the Saxon Marches and the Bavarian Marches) and palatines (first the stem dukes and later the Prince-Electors).
 
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Great DD. I love this mechanic, and I'm really looking forward to a DLC that expands the feudal contract and centers more peacetime political gameplay around this.

Does this contract mechanic apply to Indian realms as well?