• We have updated our Community Code of Conduct. Please read through the new rules for the forum that are an integral part of Paradox Interactive’s User Agreement.

Stellaris Dev Diary #247 - New Ways to Rule

Hello everyone!

In the Overlord Announcement last week we mentioned that vassalization mechanics will be undergoing some significant changes in the 3.4 “Cepheus” update. (Click here to wishlist!)

Previously in Stellaris, subjugation was rarely a more compelling option than simple conquest, and being subjugated often essentially meant a permanent decline of your empire and a “Game Over” screen in your near future. Subjects did not offer sufficient benefits nor had the freedoms necessary to be enjoyable to play.

The Scion origin from Federations was somewhat of an exception with most of the restrictions on both subjects and overlord being waived for them, but we felt that while the system was good, it could be even better. It would also be nice for the Scion to work within the rules rather than being so “special-cased”.

Some people noted that as part of the unity changes in Libra, a bit more of an argument for spinning off sectors into vassals could be made, but with the current numbers it’s generally more valuable to control those systems directly.

For today’s dev diary, I’ll start by delving deeper into the new rights and responsibilities that can appear in agreements, and some ways this makes keeping subjects more valuable.

As with all previews, numbers, text, and so on are not quite final and are still subject to change.

Negotiating Terms​


Both the overlord and subject will be able to propose alterations of the exact terms of their vassalization contract if it’s a contract with another “regular empire”. The Khan, Awakened Empires, and the like do not haggle about the terms of their minions, but are much clearer about those exact terms.

Subject contracts start with a “preset”. These are the basic subjugation types that you know from before, plus a few new ones - Vassal, Subsidiary, Tributary, Protectorate, Bulwark, and so on. Presets have a list of default terms, and can have additional unique effects tied to them, like how Protectorates gain a massive bonus to research until they catch up to their overlord.

The default terms of contract presets may have changed a bit from the old system to better fit the new. We’ve done our best to ensure that anything you can do right now with your vassals remains possible. The core Negotiation system is part of the free Cepheus update, though many of the brand new terms are part of the Overlord expansion.

Negotiable terms include things such as:
  • Can the subject be integrated?
    • As a major change from current gameplay, there are no vassalization contract presets that have integration enabled by default. It must be explicitly turned on in contract negotiations.
  • Does the subject have independent diplomacy?
    • Subjects can be given complete diplomatic freedom, none, or they can have most freedoms except are forced to vote with their overlord in the Galactic Community or Federations.
  • Can the subject expand freely?
    • Once exclusively the province of Feudal Society, now you can grant your subject the ability to freely expand. You can also bar them from expansion, or impose an Influence tithe, making them spend extra Influence (which goes to the Overlord) for the right to expand into empty systems.
    • Most presets will start with controlled expansion with the influence tithe as the default term.
  • Various subsidies from the overlord or tribute from the subject.
    • These are broken into Basic, Advanced, or Strategic resource groups, and Research.
    • The values are percentages of the production of the subject - in the proposal below, our vassal is offering 15% of their basic resource production as tribute, but is receiving a research subsidy equal to 15% of the subject’s research from the overlord.
  • Are the overlord and subject drawn into one another’s wars, and if so, which ones?
    • None, Offensive, Defensive, or Both can be selected in both directions.
    • Yes, this means that wars can be declared on subjects.
  • Can the overlord build holdings on the subject’s worlds, and if so, how many?
    • The Vassal preset has a holding limit of 1, allowing you to use some holdings without Overlord. (Though you can lower it to 0 if you need to squeeze out an extra bit of loyalty.)
    • This value is an empire-wide limit - with a holding limit of 3, you can build 3 holdings across a particular subject’s worlds, not on each of their planets.
  • Does the overlord share sensor information with their subject?

Subjugation Proposal UI

Some subject types have fixed, minimum, or maximum terms - Tributaries, Subsidiaries, and Prospectoria, for example, must always provide their overlord at least 30% of their basic resources (energy, minerals, and food) in tribute.

Part of the Tributary agreement UI

Tributaries have many locked terms.

Others can be restricted by civics or for other reasons - for example, overlords with the Feudal Society civic cannot select the Expansion Prohibited term, must join in their subject wars to some degree, and must allow their subjects some degree of diplomatic freedom.

Feudal Society civic

Different terms affect a subject’s Loyalty, and have an immediate impact as well as over time. For example, the Independent Diplomacy term grants 5 Loyalty and another +0.5 Loyalty per month. This may prove important later.

If you’re asking your subject to do something they are ideologically opposed to, those terms may cost extra loyalty, though the reverse is also true in a few cases.

Pacifists don't like being dragged into Offensive Wars

The pacifists don’t like being forced into offensive wars.

Empires can propose a change in terms with a five year cooldown at a cost of some Influence. Exact costs are still being adjusted.

Proposal from our vassal

We are feeling beneficent today, and want you to catch up to us faster, Protectorate.

How can you influence them into accepting your generous offer? Giving them a good deal is certainly helpful, and just like before, empire relations and relative power go a long way as well.

The terms themselves are heavily moddable, I look forward to seeing what some of you come up with.

The Benefits of Loyalty​

Loyalty is the “currency” used between overlord and subject, and while the Specialist empires make more use of it than regular vassals, it’s still beneficial to keep your minions loyal since it gives you more options. Loyalty is largely determined by the contract between overlord and subject, but ethical compatibility will come into play as well.

Loyal vassals will agree to more onerous terms during negotiations, and will generally support their overlord. You can also “spend” their loyalty as part of trade agreements, strong-arming them into granting you better than normal trades.

You can request a public Pledge of Loyalty to you from a loyal vassal, making them even more loyal over time.

Pledge Loyalty

Pledge Loyalty has greater effects if the subject actually likes you for some reason.

Disloyal vassals will look for ways to be free of your tyranny, seizing the chance for rebellion should you falter.

They may also swear Secret Fealty to one of your rivals in hopes that they’ll be able to follow them in an Allegiance War.

Pledge Secret Fealty

In an Allegiance War, you seek to wrest control of the vassals that have pledged Secret Fealty to you, and they will join in on the attack on their former Overlord.

Gotta Subjugate Them All​


Like herding cats, having many vassals is hard work. Constantly vying for your attention, keeping multiple subjects happy can be difficult as jealousy ruins everything. “Divided Patronage” is a modifier that reduces the loyalty of all of your vassals, and increases based on the number of vassals you have.

You can mitigate this by offering them better terms, or by taking a vassalization related civic or the Shared Destiny ascension perk.

Franchising


Shared Destiny

Overlord Holdings​

In Cepheus, we’re expanding the branch office system from MegaCorp to be more flexible.
The corporate tab on planets is being replaced with a more versatile “Holdings” tab. For now, we have corporate and overlord holdings available here, but we have more future plans for this screen.

Much like branch office buildings, holdings are built on another empire’s colonies and can provide benefits to both empires. Much like criminal syndicate branch office buildings, some holdings might be far more beneficial to one side than the other. Each particular holding is planet-unique,

Corporate overlords can build both holdings and branch offices on their subjects’ colonies.

Holdings (Ministry of Truth)

The Ministry of Truth provides two Overlord Propagandist jobs to the planet, which turn the subject’s Unity into Influence for their overlord…

Material Ministry

…While holdings like the Material Ministry are disliked by subjects as the overlord claims a portion of the planet’s production for themselves…

Aid Agency

…Still others, like the Aid Agency, are welcomed on the planet.

Splinter Hive

Hive overlords can build the most universally disliked holding (tied with one other), which takes a portion of the subject’s planet and dedicates it to a spawning complex.

We’re also adding some holdings associated with civics or origins.

Noble Chateaus

The Noble Chateaus of the Aristocratic Elite allow them to send troublemakers off to bother someone else’s planet instead of their own, much to the dismay of their hosts…

Communal Housing Outreach

…Shared Burdens empires can spread their message through Communal Housing projects. How this is received depends largely on the ethics of the subject…

Gaia Seeder Outpot

…And Gaia Seeders, who are gaining more terraforming flexibility in Cepheus as described in Dev Diary #243, can also beautify the worlds of their subjects. The subjects tend to like that - unless they’re Hydrocentric, of course.

Since there are over twenty different holdings, I’ll share some more in next week’s dev diary (including a machine specific one), and some more on social media as the Overlord reveals continue (though I’ll repost those in that week’s dev diaries as well).

It’s a very versatile system that we look forward to exploring more in the future.

The Future is Ours​


That’s long enough for today. Next week we’ll talk about the advanced form of vassalization coming in Overlord called Specialist Empires.

Also, starting with this dev diary, we’re creating video versions on the Stellaris Official YouTube Channel for those of you that prefer listening to them. Subscribe so you don’t miss them, and let us know what you think!


Click here to wishlist Overlord!
 
  • 167Love
  • 152Like
  • 7
  • 3
  • 2Haha
  • 2
Reactions:
  • Can the subject be integrated?
    • As a major change from current gameplay, there are no vassalization contract presets that have integration enabled by default. It must be explicitly turned on in contract negotiations.

What are the prospects of integration being removed entirely? Or- how hard is it to force an involuntary subject to accept this condition?

Currently a main driver of military snowballing in wide is the ability to force-subjugate and integrate. Even if it's not the default, a first read suggests it's still better to own rather than tributize the AI systems, since wider is still better, and thus incentivizing integration-contracts over all others. Pops are still king, you can't get the pops without integrating, qed.

If all integration were removed, then this would make claim wars the primary/only way for direct expansion, which would greatly boost the value of other subject categories... especially if you use the unity-to-influence building to fund those claim wars.


I like these ideas a whole, but this is a case where I fear one mechanic will undermine all the rest of the work.
 
  • 5Like
  • 5
  • 1
Reactions:
I love it!

Have you considered a holding for a Chosen Overlord, so that vassals get the opportunity to properly worship them? I was thinking something along the lines of a huge statue, before which billions may grovel to show deference.

Another question: can we re-negotiate contracts by using more... forceful approaches? Like, for example, I want to change the tribute to 50% and the subject - for whatever reason - is unwilling to comply.
 
  • 12Like
  • 1
Reactions:
Very cool !

Let me have a thought for French people in your team who suffered from reading this ignominy of "Chateaus"
 
Last edited:
  • 8Haha
  • 2Like
  • 1Love
Reactions:
I'm liking what I've read so far. A few questions
1. In regards to Holdings do you think you could add the ability for us to build habitants and gateways in our vassals space?
2. Do you think guys could aid the ability to influence a vassals species rights policies. For example to make it to where if you give a specific species residency, they have to do the same?
3. Even if a vassal is excluded from joining your offensive wars, will they at least close their borders to whoever you're at war with so they don't become a back door into your empire?
 
Last edited:
  • 5Like
  • 4
  • 1
Reactions:
I sure hope the hives also get some overmind or symbiotic origin that features vassal play. Maybe even with a second starting species so you can finally play the trope of specialised drones from the start.
 
  • 4Like
  • 1
Reactions:
I have to say... last week I was sceptical, but this looks actually really cool and interesting! Congrats!
 
  • 4Like
  • 1
Reactions:
Wow this sounds great! I'm especially excited for the Hive buildings. Thank you for dedicating time for us Hivemind fans!
 
  • 5Like
Reactions:
I'm quietly optimistic about the new vassal system.

Looking at the screenshots though, I must admit I'm a little disappointed there's no vassal type that increases naval cap, or is this option going to be locked only to specific origins/civics?

Also, will we be able to declare war to take vassals from other empires even if they haven't pledged their secret fealty to us?
Whose naval cap are you wanting to be increased, the overlords or the vassals.
Overlord getting naval cap from vassals was quite a problem a few years ago where overlords could pull like 20% of their vassals naval cap which in conjunction old galatic force projection giving 200 naval cap meant that releasing a bunch of 1 system vassal was an effective method of getting alot of fleet cap.
 
  • 3
Reactions:
What options exist for the overlord if your vassal simply refuses to accept your "generous" modification to their contract even with something to sweeten the deal, say due to the vassal for whatever reason not understanding that the species we just purged really had it coming (they know what they did!)? Can we go for a "Give us integration rights 'willingly' or we'll make you!" ultimatum right away (with possible downsides as far as opinion and loyalty goes in general), fighting a war to force compliance if it is refused, or do we have to break off the subject relation, wait out the truce, and then subjugate them in a manner that gives us the terms we want? If it is the latter, is the AI able to figure out what to do if it has uppity subjects that refuse to let it alter various deals?
 
The Khan, Awakened Empires, and the like do not haggle about the terms of their minions, but are much clearer about those exact terms.
Are their terms changing in any way? It'd be cool if those vassalization terms were also part of this system, and maybe had some kind of benefit to them.
 
  • 2
Reactions:
i like the new direction of the vassal mechanics and i'm looking forward to playing with the new system.

sorry if this has already been answered elsewhere, but what about the "vassals don't get the AI difficulty bonuses" topic? will that be changed (perhaps as an option in the galaxy settings?) or will it remain as it is?

on higher difficulties an AI empire that built a working economy thanks to bonuses but then becomes a vassal may find themselves in a tough spot where aspects of the country may become dysfunctional when the bonuses are taken away.


hope that's something you have a good solution for, otherwise the whole endeavour would seem a bit pointless.
 
  • 10Like
  • 4
Reactions:
Hello everyone!

In the Overlord Announcement last week we mentioned that vassalization mechanics will be undergoing some significant changes in the 3.4 “Cepheus” update.

Previously in Stellaris, subjugation was rarely a more compelling option than simple conquest, and being subjugated often essentially meant a permanent decline of your empire and a “Game Over” screen in your near future. Subjects did not offer sufficient benefits nor had the freedoms necessary to be enjoyable to play.

The Scion origin from Federations was somewhat of an exception with most of the restrictions on both subjects and overlord being waived for them, but we felt that while the system was good, it could be even better. It would also be nice for the Scion to work within the rules rather than being so “special-cased”.

Some people noted that as part of the unity changes in Libra, a bit more of an argument for spinning off sectors into vassals could be made, but with the current numbers it’s generally more valuable to control those systems directly.

For today’s dev diary, I’ll start by delving deeper into the new rights and responsibilities that can appear in agreements, and some ways this makes keeping subjects more valuable.

As with all previews, numbers, text, and so on are not quite final and are still subject to change.

Negotiating Terms​


Both the overlord and subject will be able to propose alterations of the exact terms of their vassalization contract if it’s a contract with another “regular empire”. The Khan, Awakened Empires, and the like do not haggle about the terms of their minions, but are much clearer about those exact terms.

Subject contracts start with a “preset”. These are the basic subjugation types that you know from before, plus a few new ones - Vassal, Subsidiary, Tributary, Protectorate, Bulwark, and so on. Presets have a list of default terms, and can have additional unique effects tied to them, like how Protectorates gain a massive bonus to research until they catch up to their overlord.

The default terms of contract presets may have changed a bit from the old system to better fit the new. We’ve done our best to ensure that anything you can do right now with your vassals remains possible. The core Negotiation system is part of the free Cepheus update, though many of the brand new terms are part of the Overlord expansion.

Negotiable terms include things such as:
  • Can the subject be integrated?
    • As a major change from current gameplay, there are no vassalization contract presets that have integration enabled by default. It must be explicitly turned on in contract negotiations.
  • Does the subject have independent diplomacy?
    • Subjects can be given complete diplomatic freedom, none, or they can have most freedoms except are forced to vote with their overlord in the Galactic Community or Federations.
  • Can the subject expand freely?
    • Once exclusively the province of Feudal Society, now you can grant your subject the ability to freely expand. You can also bar them from expansion, or impose an Influence tithe, making them spend extra Influence (which goes to the Overlord) for the right to expand into empty systems.
    • Most presets will start with controlled expansion with the influence tithe as the default term.
  • Various subsidies from the overlord or tribute from the subject.
    • These are broken into Basic, Advanced, or Strategic resource groups, and Research.
    • The values are percentages of the production of the subject - in the proposal below, our vassal is offering 15% of their basic resource production as tribute, but is receiving a research subsidy equal to 15% of the subject’s research from the overlord.
  • Are the overlord and subject drawn into one another’s wars, and if so, which ones?
    • None, Offensive, Defensive, or Both can be selected in both directions.
    • Yes, this means that wars can be declared on subjects.
  • Can the overlord build holdings on the subject’s worlds, and if so, how many?
    • The Vassal preset has a holding limit of 1, allowing you to use some holdings without Overlord. (Though you can lower it to 0 if you need to squeeze out an extra bit of loyalty.)
    • This value is an empire-wide limit - with a holding limit of 3, you can build 3 holdings across a particular subject’s worlds, not on each of their planets.
  • Does the overlord share sensor information with their subject?


Some subject types have fixed, minimum, or maximum terms - Tributaries, Subsidiaries, and Prospectoria, for example, must always provide their overlord at least 30% of their basic resources (energy, minerals, and food) in tribute.

View attachment 821354
Tributaries have many locked terms.

Others can be restricted by civics or for other reasons - for example, overlords with the Feudal Society civic cannot select the Expansion Prohibited term, must join in their subject wars to some degree, and must allow their subjects some degree of diplomatic freedom.


Different terms affect a subject’s Loyalty, and have an immediate impact as well as over time. For example, the Independent Diplomacy term grants 5 Loyalty and another +0.5 Loyalty per month. This may prove important later.

If you’re asking your subject to do something they are ideologically opposed to, those terms may cost extra loyalty, though the reverse is also true in a few cases.

View attachment 821356
The pacifists don’t like being forced into offensive wars.

Empires can propose a change in terms with a five year cooldown at a cost of some Influence. Exact costs are still being adjusted.

View attachment 821357
We are feeling beneficent today, and want you to catch up to us faster, Protectorate.

How can you influence them into accepting your generous offer? Giving them a good deal is certainly helpful, and just like before, empire relations and relative power go a long way as well.

The terms themselves are heavily moddable, I look forward to seeing what some of you come up with.

The Benefits of Loyalty​

Loyalty is the “currency” used between overlord and subject, and while the Specialist empires make more use of it than regular vassals, it’s still beneficial to keep your minions loyal since it gives you more options. Loyalty is largely determined by the contract between overlord and subject, but ethical compatibility will come into play as well.

Loyal vassals will agree to more onerous terms during negotiations, and will generally support their overlord. You can also “spend” their loyalty as part of trade agreements, strong-arming them into granting you better than normal trades.

You can request a public Pledge of Loyalty to you from a loyal vassal, making them even more loyal over time.


Pledge Loyalty has greater effects if the subject actually likes you for some reason.

Disloyal vassals will look for ways to be free of your tyranny, seizing the chance for rebellion should you falter.

They may also swear Secret Fealty to one of your rivals in hopes that they’ll be able to follow them in an Allegiance War.


In an Allegiance War, you seek to wrest control of the vassals that have pledged Secret Fealty to you, and they will join in on the attack on their former Overlord.

Gotta Subjugate Them All​


Like herding cats, having many vassals is hard work. Constantly vying for your attention, keeping multiple subjects happy can be difficult as jealousy ruins everything. “Divided Patronage” is a modifier that reduces the loyalty of all of your vassals, and increases based on the number of vassals you have.

You can mitigate this by offering them better terms, or by taking a vassalization related civic or the Shared Destiny ascension perk.


Overlord Holdings​

In Cepheus, we’re expanding the branch office system from MegaCorp to be more flexible.
The corporate tab on planets is being replaced with a more versatile “Holdings” tab. For now, we have corporate and overlord holdings available here, but we have more future plans for this screen.

Much like branch office buildings, holdings are built on another empire’s colonies and can provide benefits to both empires. Much like criminal syndicate branch office buildings, some holdings might be far more beneficial to one side than the other. Each particular holding is planet-unique,

Corporate overlords can build both holdings and branch offices on their subjects’ colonies.


The Ministry of Truth provides two Overlord Propagandist jobs to the planet, which turn the subject’s Unity into Influence for their overlord…


…While holdings like the Material Ministry are disliked by subjects as the overlord claims a portion of the planet’s production for themselves…


…Still others, like the Aid Agency, are welcomed on the planet.


Hive overlords can build the most universally disliked holding (tied with one other), which takes a portion of the subject’s planet and dedicates it to a spawning complex.

We’re also adding some holdings associated with civics or origins.


The Noble Chateaus of the Aristocratic Elite allow them to send troublemakers off to bother someone else’s planet instead of their own, much to the dismay of their hosts…


…Shared Burdens empires can spread their message through Communal Housing projects. How this is received depends largely on the ethics of the subject…


…And Gaia Seeders, who are gaining more terraforming flexibility in Cepheus as described in Dev Diary #243, can also beautify the worlds of their subjects. The subjects tend to like that - unless they’re Hydrocentric, of course.

Since there are over twenty different holdings, I’ll share some more in next week’s dev diary (including a machine specific one), and some more on social media as the Overlord reveals continue (though I’ll repost those in that week’s dev diaries as well).

It’s a very versatile system that we look forward to exploring more in the future.

The Future is Ours​


That’s long enough for today. Next week we’ll talk about the advanced form of vassalization coming in Overlord called Specialist Empires.

Also, starting with this dev diary, we’re creating video versions on the Stellaris Official YouTube Channel for those of you that prefer listening to them. Subscribe so you don’t miss them, and let us know what you think!

To make vassals more desirables You could just give portion of alloy production, political power and naval cap to overlord, and lot of people would actually start using vassals.
But still, making game deeper is something we all are happy to see :D
(talking about "deeper", can gestalt consciousness ever be... less shallow?).
Btw. Will vassals give ortion of their Naval cap/political power to overlord? If not, then feudal society could still be underused. If i have to rely on lots of subjects, and at the same time i would have almost no navy... Just... think about it ;)

i like the new direction of the vassal mechanics and i'm looking forward to playing with the new system.

sorry if this has already been answered elsewhere, but what about the "vassals don't get the AI difficulty bonuses" topic? will that be changed (perhaps as an option in the galaxy settings?) or will it remain as it is?

on higher difficulties an AI empire that built a working economy thanks to bonuses but then becomes a vassal may find themselves in a tough spot where aspects of the country may become dysfunctional when the bonuses are taken away.


hope that's something you have a good solution for, otherwise the whole endeavour would seem a bit pointless.
Only way to save AI from collapse (and your own, conquered planets) is to play at Ensign difficulty xD
 
  • 1
Reactions:
Can megacorps get a similar building that boosts pop growth. Megacorps are supposed to own few planets, aren't they? So you usually have low pop growth. Somethy like a building that massively improves your capital immigration attraction and force your subjects to make migration contracts could achieve something similar without feeling like a copy of the hive building.
 
  • 10Like
  • 1
Reactions:
Man, I really like the synergy between the DLCs. It feels so rewarding for all my money spent.

However, two questions though.
1. "Protectorates gain a massive bonus to research", "but is receiving a research subsidy equal to 15% of the subject’s research from the overlord."
If your subject type is not a protectorate, you lose -X research and your vassal gains +X research without any modifiers, right? Or is there some kind of modifiers that is boosted by a number of technologies you're ahead of? Like research agreement.
2. Will there be any significant changes to the hegemony federation?
 
  • 2Like
Reactions:
1. "Protectorates gain a massive bonus to research", "but is receiving a research subsidy equal to 15% of the subject’s research from the overlord."
If your subject type is not a protectorate, you lose -X research and your vassal gains +X research without any modifiers, right? Or is there some kind of modifiers that is boosted by a number of technologies you're ahead of? Like research agreement.

Protectorates get an inherent bonus (regardless of Terms) of -80% to tech cost for any technology that their Overlord has researched - this hasn't been changed from 3.3
 
  • 34
  • 7Like
Reactions:
I do like how a Federation-like system of laws is being extended to subjects. I'm a bit concerned though that it might still be more cost-effective to just rule systems directly, rather than through subjects. Are there new motivations why one would have a subject as opposed to direct rule?
 
  • 3Like
  • 1
Reactions: