N.B. All are on standard speed

Wonder Unlock Cost:

250 + 200 * (Number of Claimed Wonders)^2

Territory Attach Cost:

30 + 50 * (Number of Territories in THIS City) * (Number of Territories in ALL Cities)

Civic Enactment Cost:

20 + 5 * Era^2 * Enacted Civics^2

All of these grow quadratically. The Civic enactment cost in particular jumps up massively in each era and gets prohibitively expensive so if you do plan to enact a civic it is much better to do it just before changing into the next era.

One more

Civic Cancellation Cost:

90 * Era^2 - 55

Also interestingly the reductions for enabling/cancelling Civics are ADDITIVE, not multiplicative (unlike say unit construction costs) so if you have Writing (-20%), Encyclopedia (-20%), Press Freedom (-20%) and the Tenet Undertake Pilgrimage (-25%), the cost of enacting/cancelling civics becomes a mere 15% of the raw numbers.

Thanks

Updated https://humankind.fandom.com/wiki/Cultural_Wonder#Building_a_wonder and https://humankind.fandom.com/wiki/Civic#Enacting_Civics

Wait, so if all those other modifiers for civic cost drops it to 15%, what happens when one also adopts the Ming culture on top of all that? Doesn't that culture's LT also reduce civic costs by 25%?

CoconutTank wrote:

Wait, so if all those other modifiers for civic cost drops it to 15%, what happens when one also adopts the Ming culture on top of all that? Doesn't that culture's LT also reduce civic costs by 25%?

I just checked - yes!!!!

You can have infinite influence at this point by enacting/cancelling civics repeatedly - SpiffingBrit, this is one for you! :)

Wow hopefully someone can report this as a bug or get the developers attention to this 

Thank you @CoconutTank and @Arkatreides for discovering the exploit! Enjoy it while it lasts :D

Nice catch!

Even though Civic cost reductions are indeed supposed to be cumulative, enacting a Civic should definitely not grant you Influence.

Oriolie wrote:

Nice catch!

Even though Civic cost reductions are indeed supposed to be cumulative, enacting a Civic should definitely not grant you Influence.

The easier solution is to make them noncumulative (multiplicative, and just bump them all up by a small amount)

-20%+ -20%=-40% = 60%

80%(-20%)*75%(-25%)=60%

So if you increased all the -20% to -25% and -25% to -35% then it should be ok (better with one or two, and not broken with all of them)

... with that

Writing 0.75

Encyclopedia 0.75 [0.5625 total

Press Freedom 0.75 [~0.42 total

Pilgrimage 0.65 [~0.27 total

Ming 0.65 [~0.17 total

That way if they add more its ok.

Very interesting and usefull work Arkatreides.

Please continue your investigations!  :)

Arkatreides wrote:

You can have infinite influence at this point by enacting/cancelling civics repeatedly - SpiffingBrit @JumboPixel , this is one for you! :)

Sorry typo ... ;) 

If you haven't seen it, hilarious video here https://www.youtube.com/watch?v=gKXojvrtVI8

Shame it doesn't actually add to make infinite influence for complete game breakingness ie Everything with influence is free

Arkatreides wrote:

[...]

Civic Enactment Cost:

20 + 5 * Era^2 * Enacted Civics^2

As of the latest patch this formula is no longer true. I haven't fully worked out the new equation yet but there definitely is a cubic component to it now. However just doing a naive fit gives me some really odd coefficients (1.407, -1.79, 3.217) so there probably is something else here that I am missing.

On the flipside it looks like the progression with Era is less severe now and it appears to be linear.

So my best theory right now is that it is

20 + Era * Cubic Polynomial in terms of "Enacted Civs"

Right, so after some intensive test I think I found the new equation. It is not an exact cubic as I had assumed but a power of 3.1 (not sure why they didn't just go for the clearer power of 3 ... other than to confuse me!).

Civic Enactment Cost:

20 + Era * Enacted Civics^3.1