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Stellaris Dev Diary #19 - Diplomacy & Trade

Greetings!

Today our humble offering covers some of the possible Diplomatic Actions and Trade Deals that can occur between Empires. As most of you may know, the basic diplomatic model used in our previous games work quite well and we will use something similar in Stellaris. All Empires will have opinions of all other known Empires, and different actions, events and internal politics will often affect that opinion. The ethics of each Empire will of course play a heavy role here, as pacifist Empires will react quite differently to aggressive wars than would a xenophobic militarist one.

In Stellaris trade between Empires is a very direct affair. Players can create two-way deals lasting a set amount of time, and our ambition is that most diplomatic actions should be available here as tradeable objects. For example, you can offer another Empire a monthly payment of Minerals in exchange for Military Access and updated Star Charts for a period of 5 years, or receive a vital supply of the rare Garanthium resource by offering a nonaggression treaty as well as a guarantee of independence should the other Empire feel threatened. If you want to simply gift or demand something you can leave one side of the trade-deal blank, and the AI will react accordingly.

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However, these kinds of trade deals will only happen between equal Empires and as most rulers know, it is better to gain something without having to give up something else. This is where more static diplomatic relationships come into play.

Tributary
A Tributary is forced to pay a set amount of their income to their Overlord each month and is most often established as the result of a lost war. The Overlord will not automatically defend them in wars, so the Tributary is caught in quite an unfortunate position until they have the military strength to either demand an end to their servitude or declare a war of independence.

Protectorate
A Protectorate is a subject protected by a (to them) technologically superior Empire. The Protectorate gains a major research-bonus to all technologies that their Overlord has already researched, and is automatically converted to a Vassal when having progressed far enough technologically.
Any pre-FTL species that is technologically enlightened is automatically created as a Protectorate under whichever Empire granted them the ability to space-travel. The Overlord in turn gains political Influence each month and the eternal gratitude of a bright-eyed new member of the galactic community.

Vassal
A Vassal is the most controlled type of subject-Empire. They will automatically join their Overlord’s wars, aggressive and defensive, and they have no autonomy when it comes to foreign policy or diplomatic relations. A vassal also run the risk of a full diplomatic integration by their Overlord.

Subject-actions
All types of subjects have a Liberty Desire expressing how content they are living under their Overlord’s rule. If a subject's Liberty Desire becomes very high they have a chance to start a war for independence, often waiting for an opportunity when they sense weakness (a taxing war, a larger uprising, a galactic crisis etc.). The Liberty Desire is a compound of a few different parameters but the main ones are the subjects opinion of the Overlord, the total military strength of all the subjects relative to the Overlord as well as if the subject can find someone who supports their cause.
As you would expect from our other games you are able to support the independence of another Empire’s vassal. Doing this will greatly increase their Liberty Desire (assuming the supporter has a fleet rivaling their Overlord) and may cause them to rebel. If they do, the Empire supporting them automatically joins their war for independence. You are also able to guarantee the independence of a smaller Empire, automatically entering the war on their side should they be attacked.

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We’ve also added another vital diplomatic action to ensure that we can realistically model the complicated diplomatic interactions going on between advanced nations; the insult. Make sure to clearly express your feelings towards your enemy by insulting them, instantly lowering the opinion between your Empires greatly.

That was all for this week. Next dev diary will be written by Doomdark, expanding further upon War & Peace.
 
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A fair point. The name is not set in stone so suggestions for what we could call this value are appreciated. However, we do want to keep it somewhat "grounded" so it's clear at a glance what it actually means (so no super-esoteric terms).
You could just invert the mechanic and call it "Loyalty" instead. So a state that has 0% Loyalty is likely to war it's overlord.

I want to play Stellaris.
I think we all do...
 
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1) We're testing to see if a cap is needed, or if Liberty Desire is enough.
Wouldn't it make sense to, without forcing a hard cap, just make the inferior partners evaluate their war as more likely to succeed when there are many others in a similar position, or when there's already an ongoing independence war?
A fair point. The name is not set in stone so suggestions for what we could call this value are appreciated. However, we do want to keep it somewhat "grounded" so it's clear at a glance what it actually means (so no super-esoteric terms).
"Autonomy" and "Independence" are not esoteric. They are far less so, in this context, than Liberty.
 
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Hey, protectorates in Stellaris become vassals when they tech up ... like they should in EUIV.

Dunno. Maybe.
Another option is that they join the galactic federation of the gods and their uplifted pets & former bronze age societies tricked into joining the greater empire.
That would grant the closest thing to the creative trait (moo-baa 2) when multiple civs research their own thing and then share.

With sectors you might as well split into multiple parts.
And when you mess with me, you mess with my whole family! :p
 
I feel that it is about time to use a better label, for the political tool named 'insult' so far. I propose "Do the Trump".
 
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I dunno if someone already pointed this out but...
there's no alpha banner. There's no alpha banner. THERE'S NO ALPHA BANNER.

Okay anyways; I approve of the system. It's EUIV-esque but it does have some innovations to it, like setting your own custom length of time for the agreement.
 
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Now we can see what those buttons on the bottom right are!
 
That moment... when I realised that Sporocarps are mushrooms equivalent of genitalia.
And fungi aliens are happy to show them to us.
There, now you cannot unthink it. Enjoy.
 
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I am a big fan of the diplo options outlined.

Maybe instead of tech trading, (which can be fun to do late game to beef up a buffer state), there could be a diplo option to form a research agreement.

Such an agreement would take a scientist character from both empires out of circulation for the duration.
It would provide a small boost to research for both nations for the duration, with a large resource point payout to both empires on the conclusion.

Depending on the character traits of the scientists, this conclusion could just reward research points, it could promote good relations between the two states, or cause a diplomatic incident (say, if one scientist steals all of the research for his state. The empire would then get the option to share the research and arrest the scientist, or keep it and damage relations).

I also hope that there is more in the way of espionage. Proxy wars have been an important part of modern warfare, and they are tragically underrepresented.
 
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A fair point. The name is not set in stone so suggestions for what we could call this value are appreciated. However, we do want to keep it somewhat "grounded" so it's clear at a glance what it actually means (so no super-esoteric terms).
I think the most appropriate meaning would be "selfstanding desire"
from Wiki selfstanding -
standing or existing in ones own power, ability or competence, non-reliant
 
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I like how Protectorates upgrade into Vassals automatically once technologically advanced enough; I've always disliked how EU4 Protectorates automatically break off once they Westernize off their overlord. However, I presume this would indicate the Protectorates in Stellaris are just as diplomatically limited as Vassals? That would be a shame, because I've always liked to see my Protectorates aggressively expand their borders and beat up other backward tags.

Materialistic fungoid? Now that is an odd combination.

But hey, at least the Athallid Sovereignty doesn't consider the Ul-Tur walking food with tentacles, the way Glorious Righteous Holy Democratic People's Republic of Gao does...

That moment... when I realised that Sporocarps are mushrooms equivalent of genitalia.
And fungi aliens are happy to show them to us.
And I'm happy to eat them!

I am really enjoying the pointless geometric shapes in the window behind the Mushroom King.
The window frame design isn't pointless! They're just materialistic!
 
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I am happy that tech or planet trading are not included.These systems are nothing but exploits the humans use against a non strategic thinking A.I.

I think the treaty caps like in EU4 all also needed.With the possible huge amounts of factions it is needed.
 
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You already spoke about federations at some point, any chance that we will see more multilateral diplomacy in Stellaris?

What I'm thinking is that in real life nations join alliances which are multilateral rather than signing a bunch of bilateral agreements. Is there a chance something like this could appear?
 
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On tech-trading; we are thinking of some sort of research-treaty that does not accelerate the game-pace wildly or allows players to game the AI, yet gives friendly Empires a reasonable way to co-operate against another big bad Empire. Whatever we do there won't be a straight-up trading/selling of entire technologies as it's a nightmare to balance/create interesting gameplay from.
How about a "Research cooperation" deal which gives both something like a +5% research speed bonus?

And now something completely different (not really):
Is a trade between overlord and vassal/protectorate/tributary possible? In other games I'm often annoyed that your range of interaction with your subordinate races/empires reduces to annexation or letting them go.
 
Sounds like a blend between the traditional Paradox diplomacy system and Civilizations diplomacy.
 
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