What exactly is the difference between something like Nation difficulty and Humankind difficulty? Is it changes in behavior? Do they get to instantly spawn units, see through fog of war, get larger yield boosts, etc? Just want to know exactly what these differences are 

AI cheats just like all 4x games aka Civ / Stellaris etc. Production bonuses, growth bonuses, science bonuses you get the idea.

As far as combat strength goes the AI only gets +1 for the second and third highest difficulties. I have not played on the highest to say if it goes higher than that.

https://humankind.fandom.com/wiki/Difficulty

Hamlet (Sandbox)

-25% industry, money, food, culture, faith and science
-80% pollution
-10 fortification
+50 stability on human
+2 combat strength on human
-80% pollution on human

Town (Easy)

-10% industry, money, food, culture, faith and science
-40% pollution
-5 fortification
+25 stability on human
+1 combat strength on human
-40% pollution on human

Metropolis (Normal)

(no bonuses or penalties on either humans or the AI)

Nation (Hard)

-5% time to convert territories to religion / culture (rounded up)
-10% population food consumption
+5% science
+3 industry per population
+6 industry, money and food
+5 stability
-20% unit upkeep
-15% buyout cost

Empire (Serious)

-10% time to convert territories to religion / culture (rounded up)
-20% population food consumption
+10% science
+5 industry per population
+13 industry, money and food
+10 stability
-30% unit upkeep
-30% buyout cost
+5 fortification
+1 combat strength on units

Civilization (Impossible)

-20% time to convert territories to religion / culture (rounded up)
-40% population food consumption
+15% science
+7 industry per population
+20 industry, money and food
+15 stability
-60% unit upkeep
-40% buyout cost
+10 fortification
+1 combat strength on units

Humankind (Endless)

-50% time to convert territories to religion / culture (rounded up)
-70% population food consumption
+25% science
+10 industry per population
+30 industry, money and food
+30 stability
-80% unit upkeep
-60% buyout cost
+10 fortification
+2 combat strength on units

Thank you, Gwanelle. And where did you extract that info from?

Thx. This info should be in the Encyclopedia.

Kamino72 wrote:

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That's true actually, we should probably extract those

A rather good QoL idea

Gwanelle wrote:

Hamlet (Sandbox)

-25% industry, money, food, culture, faith and science
-80% pollution
-10 fortification
+50 stability on human
+2 combat strength on human
-80% pollution on human

Town (Easy)

-10% industry, money, food, culture, faith and science
-40% pollution
-5 fortification
+25 stability on human
+1 combat strength on human
-40% pollution on human

Metropolis (Normal)

(no bonuses or penalties on either humans or the AI)

Nation (Hard)

-5% time to convert territories to religion / culture (rounded up)
-10% population food consumption
+5% science
+3 industry per population
+6 industry, money and food
+5 stability
-20% unit upkeep
-15% buyout cost

Empire (Serious)

-10% time to convert territories to religion / culture (rounded up)
-20% population food consumption
+10% science
+5 industry per population
+13 industry, money and food
+10 stability
-30% unit upkeep
-30% buyout cost
+5 fortification
+1 combat strength on units

Civilization (Impossible)

-20% time to convert territories to religion / culture (rounded up)
-40% population food consumption
+15% science
+7 industry per population
+20 industry, money and food
+15 stability
-60% unit upkeep
-40% buyout cost
+10 fortification
+1 combat strength on units

Humankind (Endless)

-50% time to convert territories to religion / culture (rounded up)
-70% population food consumption
+25% science
+10 industry per population
+30 industry, money and food
+30 stability
-80% unit upkeep
-60% buyout cost
+10 fortification
+2 combat strength on units

Woah this is incredibly detailed! Where did you get this info??

Gwanelle wrote:

Hamlet (Sandbox)

-25% industry, money, food, culture, faith and science
-80% pollution
-10 fortification
+50 stability on human
+2 combat strength on human
-80% pollution on human

Town (Easy)

-10% industry, money, food, culture, faith and science
-40% pollution
-5 fortification
+25 stability on human
+1 combat strength on human
-40% pollution on human

Metropolis (Normal)

(no bonuses or penalties on either humans or the AI)

Nation (Hard)

-5% time to convert territories to religion / culture (rounded up)
-10% population food consumption
+5% science
+3 industry per population
+6 industry, money and food
+5 stability
-20% unit upkeep
-15% buyout cost

Empire (Serious)

-10% time to convert territories to religion / culture (rounded up)
-20% population food consumption
+10% science
+5 industry per population
+13 industry, money and food
+10 stability
-30% unit upkeep
-30% buyout cost
+5 fortification
+1 combat strength on units

Civilization (Impossible)

-20% time to convert territories to religion / culture (rounded up)
-40% population food consumption
+15% science
+7 industry per population
+20 industry, money and food
+15 stability
-60% unit upkeep
-40% buyout cost
+10 fortification
+1 combat strength on units

Humankind (Endless)

-50% time to convert territories to religion / culture (rounded up)
-70% population food consumption
+25% science
+10 industry per population
+30 industry, money and food
+30 stability
-80% unit upkeep
-60% buyout cost
+10 fortification
+2 combat strength on units

The only thing that bugs me about the difficulties is the combat strength bonus. I feel the AI getting more armies is good enough. The extra strength is just over kill in my opinion. The fortification increase is nice too. Just wish I could mod out the strength increases.

I have made 3 games with humankind so far, each time with a higher difficulty level, until I arrived at the last "Humankind".

After 450 rounds, there was no more technology to research, no more glory to gain and no more equal opponents because they still ride around with horses in the present.
I think something has to be done urgently about the scaling of the AI opponents, otherwise the end of the line is reached after the third game, because Humankind no longer offers a challenge.

StruppStahl wrote:

I have made 3 games with humankind so far, each time with a higher difficulty level, until I arrived at the last "Humankind".

After 450 rounds, there was no more technology to research, no more glory to gain and no more equal opponents because they still ride around with horses in the present.
I think something has to be done urgently about the scaling of the AI opponents, otherwise the end of the line is reached after the third game, because Humankind no longer offers a challenge.

I did the same, the higher the difficulty is, the faster their growth is in early. At point where it's really hard to follow them. But then they slow down and nearly stop arround coal technologies.  
They do one of this or that, like maybe a biplane or two, but nothing more. Making it quite boring if you reach mid-late game, even in Humankind difficulty

too bad, this is the same problem with civ that i was hoping these guys would fix.  Its pretty easy to fix as well, dont give the AI all of there advantages at the beginning of the game, add some with each era.

I'm struggling with Nation difficulty while you guys make Humankind look easy. How do I get good?

SpicyCrab wrote:

I'm struggling with Nation difficulty while you guys make Humankind look easy. How do I get good?

Check out streams on YouTube and Twitch: Quill18, JumboPixel, PotatoMcWhiskey, and others. These really help to get an idea of how high-level players play the game and many of them offer tips and tricks as they play. You'll get better as you play too. Just have fun with playing at the level you are at and you will eventually move to higher difficulties.

AuleCraft wrote:

SpicyCrab wrote:

I'm struggling with Nation difficulty while you guys make Humankind look easy. How do I get good?

Check out streams on YouTube and Twitch: Quill18, JumboPixel, PotatoMcWhiskey, and others. These really help to get an idea of how high-level players play the game and many of them offer tips and tricks as they play. You'll get better as you play too. Just have fun with playing at the level you are at and you will eventually move to higher difficulties.

I may be a bit late, but thanks

One can never be too late. You might want to work on your timing, even in Civ veteran players will impose a challenge upon themselves - conquer this city by turn 30 or reach that technology by turn 50.

Challenging yourself with mini-tasks on your current difficulty level will help you learn new ways of improving both your gameplay and enjoyment of the game. There are a lot of small mechanics that are not obvious to most players, like ransacking everything, including Holy sites and Cultural wonders.