Nations

This page mainly discusses the game mechanics for nations. For a list of all nations in Terra Invicta, as well as their initial stats, see Nation List instead.

Nation Stats view

Nations on Earth serve as battlegrounds for the aliens' designs on Earth and are sites of both political and military conflict. Human factions, using councilors and armies, will compete to control nations in order to make use of their resources to fulfill their objectives.

Most nations in Terra Invicta correspond to a single real-world Earth country, although in several cases adjacent groups of small nations are aggregated into a single nation so they have more relevance to the scale of the game, and any inter-nation issues within these fake aggregates generally take place below the scale of the simulation. Factions function as something like covert investors in nations, and with enough focus they can take control over the nation's economy and foreign policy.

National Stats

The prosperity and stability of Earth's nations, already tenuous in many places, has been thrown into doubt in light of the alien arrival. Different events throughout the game may alter the qualities of a nation significantly. These circumstances are tracked and made visible to the player, who can take various actions to modify them.

Overview

Population

GDPPC

IP

Economy Priority

Welfare Priority

Knowledge Priority

Government Priority

Unity Priority

Oppression Priority

Inequality

Cohesion

Unrest

Education

Government

Spoils Priority

Research

MC

• Each cell represents the effect of having higher amounts of the column stat on the row stat.
• Lighter background colors indicate stronger effects on the row stat.
• Empty cell indicates that the column stat has no direct effect on the row stat.
• indicates a complex relationship that may invert the effects of the column stat on the row stat at different threshold levels.

Population

Nations are composed of regions that each have Population measured in millions. The total Population of a nation is one of its most important stats, as Population has significant effects on nearly all other stats, including but not limited to IP, , Research output, Mission_Control cap, Army cap, and Cohesion. Larger populations also make it slower to change nation stats. This means larger-pop nations tend to have more long-term potential, but also tend to be slower to realize that potential.

For detailed mechanics, see Population.

Government

The Government score of a nation represents how democratic it is, with 0 representing a totalitarian dictatorship, and 10 representing an idealized democracy. It is raised by the Government Priority and lowered by the Oppression Priority and the Spoils Priority.

• A high government score pulls Base Cohesion towards 5, increases research output, lowers corruption, and helps with unification.
• A medium government score lowers Base Cohesion.
• A low government score raises Base Cohesion, improves the effect of the Oppression Priority and armies on Unrest, and increases the Money gained by Spoils Priority.

For detailed mechanics, see Government.

Unrest

The Unrest score represents violent resistance to the political, economic or cultural status quo in this nation. High unrest hampers the economy and may result in a coup or revolution, which will transfer or clear many or all of the nation's Control Points at once. Unrest is fed by low Cohesion and low quality of life (per-capita GDP). The Oppression priority, the Stabilize mission, and armies can reduce it, especially in non-democracies.

~ Terra Invicta Codex, 0.4.85.

In a nation with 50 million Population:

• Unrest decreases by 3 × (0.1 - Government / 100) whenever the Oppression Priority is completed.

In nations with smaller or larger Population, these changes are sped up or slowed down. See Population Scaling for more detail.

Unrest score ranges from 0 to 10:

Unrest	Score range
Peaceful	<1.5
Subversion	<3
Strife	<4.5
Insurgency	<6
Guerilla War	<7.5
Insurrection	<9
Civil War	≥9

Base Unrest

Unrest changes relatively quickly (0.25 per month, and even +1 per month if the nation has 0 Cohesion) if it is not at its resting value. This Base Unrest is calculated as:

• 10.5
• -1 per 10000 GDPPC.
• -1 per Cohesion.
• For each friendly non-megafauna army in the nation:
  • -0.5.
  • Multiplied by the army health %.
  • Multiplied by (10 - Government).
  • Divided by (the number of Regions owned by the nation) ^ 0.65.
• +1.6 × Fraction of Population living in Hostile Regions × (10 - Government)

Note: Human armies are not supposed to affect Base Unrest if their home nation cannot afford to pay their army upkeep. (Specifically, if their home nation has 0 IP production.) But this is currently bugged and they continue to affect Base Unrest anyway.

Alien-Related SPOILERS INSIDE!
For the Alien Nation, the Base Unrest is further reduced by Xenoflora. Specifically, it is reduced by: (the average of the the Nation's Regions' Xenoflora Growth Levels) / 20.

It's generally better to reduce Base Unrest instead of reducing Unrest with Stabilize Nation missions and the Oppression Priority, otherwise it will grow back naturally and quickly.

Notable Effects of Unrest

• Every 0.1 Unrest above 2 will remove 1% IP, capping at 80% IP at 10 Unrest.
• The Research produced by a Nation is multiplied by (1 - Unrest²/100). So it is multiplied by 100% at 0 Unrest, whereas it is multiplied by 0% at 10 Unrest.

Coups and revolutions

Naturally occurring coups and revolutions can happen at high levels of Unrest. The chances of coups and revolutions are checked every four days, with each nation assigned to one of the four days in the cycle. Revolutions are also checked whenever an Increase Unrest Mission in the nation has a critical success, and on 10% of the normal successes. Revolutions will always occur if >9.9 Unrest when checked, but never otherwise. A naturally occurring coup will never happen if ≥8 Government and <8 Unrest; otherwise the daily chance of coup * 4 is checked.

The daily chance of coup is ((Unrest * 2 - Cohesion - Government) / 10 + conditional elite unhappiness) / 6000, where the elites' unhappiness is Corruption percent - Spoils Priority percent, but is ignored if any of the following conditions are true:

• Corruption percent < Spoils Priority percent.
• Some faction owns all the nation's control points and that faction has ≥65% Public Support.

So natural coups can be countered by lowering Unrest and increasing Cohesion, Government and Spoils Priority (up to the Corruption level). The Spoils Priority may often be ignored if the level of Unrest in a country is sufficiently low and the Cohesion and/or Government sufficiently high, even if the indicator appears red (but note that elite happiness or unhappiness will still be a modifying factor in the chance of targeted coups).

SPOILERS INSIDE!
The Alien Nation is immune to coups, even natural ones. But it can still be hit by revolutions.

Effects of a Coup

When a nation undergoes a coup for any reason, the following changes occur:

1. The nation is removed from its federation.
2. All diplomatic cooldowns involving the nation are set to 0 days.
3. All control points in the nation are emptied, except for those owned by the faction whose councilor performed the Coup d'Etat, if any.
4. The nation's Government is changed by a random amount between -2 and 1.
5. The nation's Unrest is changed by a random amount between -3 and 0.
6. The nation's Cohesion is changed by a random amount between -1 and 1.
7. The nation's GDP is changed by a random amount between -10% and 0%.
8. Distribute the control points of the nation to the Factions that raised the most Unrest through Increase Unrest missions, starting with the leftmost control point and continuing up until and including the rightmost non-empty control point that is immediately to the right of an empty control point. If no such control point exists, then only distribute the 2 leftmost control points instead.
9. If the Coup d'Etat was performed by a councilor of some faction F, then:
   • If there are no empty control points in the nation, then give the one or two leftmost control points to F: one on normal success, two on critical success.
   • If there is exactly one empty control point in the nation and the Coup d'Etat mission was a critical success and the nation has at least two control points, then give the two rightmost control points to F.
   • Otherwise, give the first empty control point in the nation to F, and if the Coup d'Etat was a critical success, also give the control point immediately to the right of it to F.
10. Empty out every control point that is to the right of an empty control point.
11. If the Executive Control Point is no longer controlled by the same faction, then all of the nation's allies end their alliances, but the mutual diplomatic cooldowns are set to 0 days.
12. Every councilor that is still planning to perform a Coup d'Etat mission on the nation this turn aborts their pending Coup d'Etat mission.
13. Clear out all records of prior Increase Unrest missions on the nation.

Note: If any control point would be given to the Aliens' faction, then the control point is given to The Servants faction instead.

Effects of a Revolution

SPOILERS INSIDE!
For details on Revolutions in the Alien Nation, see Nations#Alien_Related instead.

When a human nation undergoes a revolution, the following changes occur:

1. The nation is removed from its federation.
2. All diplomatic cooldowns involving the nation are set to 0 days.
3. All control points in the nation are emptied.
4. Each region of the nation takes a random amount of damage from 0% to 25%, double for the capital region.
5. Distribute the control points of the nation to the Factions that raised the most Unrest through Increase Unrest missions, starting with the leftmost control point and continuing until either all control points have been distributed or there are not enough prior unrest missions to justify continuing to distribute the remaining control points.
6. The nation's Unrest is changed by a semi-random amount between -6 and -3, affected by Public Support.
7. The nation's Cohesion is changed by a semi-random amount between -3 and 3, affected by Public Support.
8. If the nation's Inequality is at least 2.5, then it is changed by a semi-random amount between -3 and 0, affected by Public Support.
   • Note: This Inequality reduction only occurs if at least 1 year has passed since the last time that the nation experienced a coup, revolution, or regime change.
9. The nation's Government is changed by a semi-random amount between -4.25 and 2.25, where the likelihood of positive changes is increased by the average Idealism of the new control point owners.
   • Note: Government cannot increase if less than 1 year has passed since the last time that the nation experienced a coup, revolution, or regime change.
10. X% chance for the number of loose nukes to increase by 1, where X is the number of Nuclear Weapons the nation had. But note that this doesn't actually reduce the number of Nuclear Weapons the nation has.
11. Clear out all records of prior Increase Unrest missions on the nation.
12. If the Executive Control Point is no longer controlled by the same faction, then all of the nation's allies end their alliances, but the mutual diplomatic cooldowns are set to 0 days.

Note: If any control point would be given to the Aliens' faction, then the control point is given to The Servants faction instead.

The changes that are affected by Public Support are multiplied by X, where X is calculated as follows:

1. Set X to 0.
2. For each non-empty control point before the revolution:
   • If this is not the executive control point, then reduce X by 0.5 × the Public Support of the control point's faction.
   • If this is the executive control point, then reduce X by 1 × the Public Support of the control point's faction.
3. For each non-empty control point after the revolution:
   • If this is not the executive control point, then increase X by 1 × the Public Support of the control point's faction.
   • If this is the executive control point, then increase X by 2 × the Public Support of the control point's faction.
4. Increase X by a random value between 0 and 0.25.
5. If all control points are empty both before and after the revolution, then again increase X by a random value between 0 and 0.25.

GDP

A nation's GDP is its Gross Domestic Product, measured in US dollars. It is primarily increased by investing in the Economy Priority. GDP determines the raw IP output of a nation and the Control Point Capacity cost to hold its Control Points, and also influences how hard it is to target the nation with missions. Per-region GDP determines Mission Control cap.

GDP per capita ("GDPPC") is the GDP divided by Population, and it has impacts on Research, Unrest, Sustainability, and corruption.

For detailed mechanics, see GDP.

Education

A nation's Education value is scored based on the average years of schooling a citizen in this nation receives as well as the quality of Education there. Nations with higher Education scores produce more research and are more resistant to extreme propaganda but gain less cohesion from the Unity priority.

~ Terra Invicta Codex, 0.4.85.

In a nation with 50 million Population:

• Each completion of the Knowledge Priority adds 0.005 Education.
  • Multiplied by 8.5 / Education if Education < 8.5.
  • Multiplied by 12 / Education if Education > 12.
• After 10 Government is reached, each completion of the Government Priority also gives the same effects as a completion of the Knowledge Priority.
• Each completion of the Unity Priority removes 0.001 Education.

In nations with smaller or larger Population, these changes are sped up or slowed down. See Nations#Population_Scaling_for_Nation_Stat_Changes for more detail.

Education	Score range
Limited	1-5
Developing	5-8
Advanced	8+

Education cannot be decreased below 1.

Education is one of the largest factors influencing National Research output aside from Population.

Research

As of Version RC6, the National Research output is calculated as:

// PavonisInteractive.TerraInvicta.TINationState
public float research_month
{
	get
	{
		float population_Millions = this.population_Millions;
		float perCapitaGDP = this.perCapitaGDP;
		return (population_Millions * ((perCapitaGDP <= 30000f) ? Mathf.Pow(this.perCapitaGDP / 15000f, 0.6f) : (1.5157166f + 0.90942997f * (Mathf.Log(this.perCapitaGDP / 15000f) - 0.6931472f))) * (this.education * Mathf.Min(this.education, 12f)) * Mathf.Pow(Mathf.Max(this.democracy, 1f), 0.16666667f) * 0.0075f + Mathf.Min(this.population / 5000f, (float)this.numControlPoints + this.education + this.democracy / 2f)) * (1.25f - Mathf.Abs(this.cohesion - 5f) / 10f) * (1f - this.unrest * this.unrest * 0.01f) * (1f + this.adviserScienceBonus);
	}
}

In other words:

A) Base of Number of Control Points + Education + Government / 2. Capped at Population / 5000.

B) Population in millions.

C) If the GDPPC is $30000 or lower, use the number (GDPPC/15000)^0.6.

If the GDPPC is higher than $30000, use 1.5157166 + 0.90942997 × (ln(GDPPC/15000) - 0.6931472) instead.

note: 1.5157166 is approximate value of 2^0.6, 0.90942997 is approximation of 0.6 × 2^0.6, and 0.6931472 is about ln(2), so this is about 2^0.6 × (1 + 0.6 × ln(GDPPC/30000))

Research factor from GDPPC

D) Scales by Education squared, then linearly at 12: Education × Min(Education, 12)

E) Scales by the sixth root of Government, with a floor of 1 at 1 Government: Max(Government^0.16666667, 1) (maximum of ~1.4678).

F) 75% efficient at 10 and 0 Cohesion, scales linearly to 125% at 5 Cohesion.

G) 100% efficient at 0 Unrest and 0% efficient at 10 Unrest, scales with Unrest squared: 1-Unrest²/100

H) n% per Science Advisor with diminishing return: 1% per Science of first Advisor + 0.5% per Science of second Advisor + 0.333333% from 3rd etc, always sorted by Advisor bonus, descending (best Advisor will count towards the first bonus).

These elements are combined as following: (A + B × C × D × E x 0.0075) × F × G × H

Mission Control

Whenever the Mission Control Priority is completed, a region in the nation is selected to gain 1 Mission Control. A nation's MC is split equally between the owners of the nation's Control Points. See Mission Control#MC_from_Nations for details.

Boost

A nation that has completed the Found Space Program Priority may invest in the Boost Priority, which will give the nation permanent production of Boost.

A nation's boost production is distributed between federation members, with larger members getting much more, and then each nation's boost is distributed equally between owners of that nation's Control Points. For details, see Boost.

Funding

The Funding priority directs national resources into legitimate government and private efforts to support space programs and other goals for the owners of its control points. While not as profitable as the Spoils priority, it does no harm to the nation.

~ Terra Invicta Codex, 0.4.85.

This is Money that the nation is providing each month to be distributed to owners of its control points.

Whenever the Funding Priority is completed, the nation's annual funding grows by 10 + (the nation's GDP in billions)^0.25 / 2, rounded to the nearest integer.

Notably, this is very similar to the formula used to determine how many control points a nation has. Thus in practice, the annual funding of a nation grows by 10 + the number of control points whenever the Funding Priority is completed.

The annual funding of a nation is capped at the nation's GDP in billions multiplied by 5.

Note: Nations that are part of a Federation will share their funding with all other Federation members. Larger nations will receive a much larger share of the Federation's total funding, with each nation's share being proportional to (the number of its control points) ^ 3.

Miltech

A nation's Military Technology, aka Miltech, value represents the capability of the nation's armed forces. It has major impacts on an army's effectiveness in Terrestrial Warfare, and can be raised with the Military Priority. For details, see Miltech.

Armies

A nation may build one or more armies with the Build Army Priority if it has completed the Found Military Priority and has a population of at least 5 million. Armies can be used to conquer other nations, defend against conquests, or attack certain Alien objects.

For detailed mechanics of army costs, army control, and the number of armies a nation can build, see Army. For army combat mechanics, see Terrestrial Warfare. For the use of armies to conquer regions, see Foreign_Relations#War_Annexation. For attacking aliens, see Aliens#Reduction.

Navies

A nation's naval score is calculated by the number of Navies it has attached to its Armies multiplied by the nation's Miltech.

There are three possible navy states:

• No Navies: No army has any navy attached.
• Freedom of the Seas: At least one army has a navy attached and there are no enemies with a higher naval score.
• Blockaded: At least one army has a navy attached and there are enemies with a higher naval score.

See Terrestrial_Warfare#Naval_Freedom for more details on how Blockades occur.

Navies are built using the Build Navy Priority. The Build Navy Priority priority is only available for a nation when all of the following are true:

• The nation has completed the Found Military Priority (or started with it already complete).
• The nation has more Armies than Navies.
• The nation has at least one region that has at least seasonal ocean access.
• One of the following is true:
  • The nation has at least 4 control points.
  • The nation has 3 control points and at least 40000 GDPPC and no Navies.

Strategic Nuclear Barrages

The number of strategic nuclear barrages that may be launched from this nation. Each barrage will devastate a single region and cause massive environmental damage globally. Nuclear strikes are directed by the faction in control of the executive control point.

Nuclear weapons can target any region belonging to current war enemies, or owned Regions with enemy forces present. Note that advanced defenses will prevent any nuclear attack.

Estimated Military Strength

The estimated military strength of a nation X is calculated as the sum of the following:

Category	Conditions	Multipliers
Number of Regions of X	Not Fully Occupied	Miltech of X × 0.7
Number of Armies of X	Not Megafauna	Miltech of X × 3 × Average Remaining Health % of the Armies SPOILERS INSIDE!   For Alien Invader Armies, use their Miltech instead of the Miltech of the Alien Nation.
Number of Navies of X		1
Unrest Value of X		-1
X has any Nukes?		100
Number Nukes of X		5

For example, at the start of the game, the nation of North Korea has 2.8 Miltech, 1 region, 1 Armies, 0 Navies, 0 Unrest, and 1 Nuclear Weapons. So its estimated military strength is the sum of:

• 1 Region × 2.8 Miltech × 0.7 = 1.96
• 1 Armies × 2.8 Miltech × 3 × 100% = 8.4
• 0 Navies × 1 = 0
• 0 Unrest × -1 = 0
• 1 (has nukes) × 100 = 100
• 1 Nuclear Weapons × 5 = 5

So it has an estimated military strength of 115.36.

The estimated military strength of a nation is important because when multiple nations fight on the same side of a war, the nation with the highest estimated military strength is chosen to be the leader of the war alliance. War leaders gain more benefits from war conquests and are the ones who decide whether to accept their enemies requests for peace. War leaders on opposite sides can also agree to completely end the war, regardless of the opinions of the other nations involved in the war.

In addition, the estimated military strength of a nation is often used by the AI to determine their international relations. The AI is naturally more wary about having bad relations with nations that have high estimated military strength.

Space Defenses

The Space Defenses priority constructs a surface-to-orbit weapons array in one region in the nation. More valuable and populous regions will be protected first. Space Defenses prevent alien landings and nuclear strikes on the region it is located in, and fire back at fleets conducting orbital bombardment against targets in the region. The cost varies with the size of the region being protected.

~ Nation UI Tooltip for Space Defenses, Terra Invicta, 0.4.86.

Human Nations can build Space Defenses after Trans-Interface Warfare is researched.

Space Defenses are built in the following order:

1. The Capital region.
2. The Core Economic regions, from highest Population to lowest.
3. The Resource regions, from highest Population to lowest.
4. The Non-Colony regions, from highest Population to lowest.
5. The Colony Regions, from highest Population to lowest.

The amount of IP needed by the Space Defenses priority to build Space Defenses in a region is calculated as 50 × Region Area / Median Region Area, but capped between 25 and 100. See Region List for a list of all regions and their areas.

Space Defenses are armed with a giant 1-GJ, 3600-cm laser (this is bigger than the Alien T3 base defense laser). Color will be best available of IR or green, and type, of laser, arc laser or phaser.

Exofighters

Human nations can build exofighters after Exoatmospheric Fighters is researched.

Whenever the Build Exofighter priority is completed, a region in the nation is selected to increase its exofighters by 1. The region is selected as follows:

• Exclude all regions that are at their Maximum exofighters.
• If any remaining region has zero exofighters, then pick the one with the highest Boost production.
• Pick the one with the highest Boost production divided by the number of exofighters already in the region.

The Maximum exofighters of a region is calculated as:

• 0 if the Monthly Boost Production is less than 1.
• Min(64, Monthly Boost Production / 4), rounded up to the nearest integer.

Cohesion

A nation's Cohesion represents the level of unity or conflict among the people of the nation. This includes cultural, ideological, ethnic and religious similarities and differences. High values describe a unified society that brooks little deviation or dissent. Middle values represent a diverse society that has both internal conflict and a healthy, creative counterculture. Middle-low values represent a high degree of political polarization, and the lowest values mean the nation's people are fragmented or even tribal. High values keep unrest in check and increase the nation's ability to resist occupation, while middle values provide a bonus to national research production, representing a robust (if messy) marketplace of ideas, low values will rapidly increase unrest. Cohesion is lowered by high inequality, anocracy, having lots of regions or a large population, destruction of armies, and a large difference between public opinion and the ideology of control point owners. Cohesion is increased by autocracy and the Unity priority, and by rivalries and wars when at least one nation involved is not a democracy. Having a high Democracy score pulls cohesion toward a middle value.

~ Nation UI Tooltip for Cohesion, Terra Invicta, 0.4.90.

In a nation with 50 million Population:

• Cohesion changes by 0.01 towards the central value of 5 whenever the Knowledge Priority is completed.
• Each completion of the Unity Priority adds 0.1 Cohesion.
  • This is reduced by 0.005 per Education.
  • This is reduced by 0.005 per Government.
  • This cannot be reduced below 0.025.
• If Government > 5, then each completion of the Oppression Priority removes 0.025 Cohesion per Government over 5.

In nations with smaller or larger Population, these changes are sped up or slowed down. See Population Scaling for more detail.

Cohesion moves by 0.1 per month towards Base Cohesion. It can decrease faster, up to 0.25 per month towards its resting point, depending on Inequality (this acceleration occurs for Inequality values between 4 to 4.6). Specifically, when Base Cohesion is lower than Cohesion, the Cohesion decrease per month is calculated as follows:

Cohesion Decrease = Min( Max(0.1, (Inequality - 3) ^ 2 / 10), Min(0.25, Cohesion - Base Cohesion) )

This is not affected by Population Scaling and is rapid enough that it is usually better to move Base Cohesion rather than trying to fight the tide. See Nations#Resting_Cohesion for details on how to achieve this.

Cohesion is also commonly changed by Events, and can be strongly affected by War Declarations and the Destruction of armies.

Cohesion ranges from 0 to 10:

Cohesion	Score range
Fragmented	<1
Fractured	<2
Sectarian	<3
Polarized	<4
Competitive	<5
Diverse	<6
Integrated	<7
Homogenous	<8
Dominated	<9
Hegemonic	<10
Monolithic	10

Resting Cohesion

Base Cohesion depends on the following factors:

Factor	Conditions	Effect
Base	Always	16
Inequality	≤ 4.75	Reduce by Min(1, 0.5 + Education/20) × 2.25 × Inequality
	> 4.75	Reduce by Min(1, 0.5 + Education/20) × (3.25 × Inequality - 4.75)
GDPPC	Always	Reduce by (1 - (GDPPC / Highest GDPPC in last 10 years)) × Inequality
Population	1 Region in Nation	Reduce by (Population in millions)0.3.
	>1 Region in Nation	Reduce by (Population in millions)0.2.
Population Distribution	Always	Reduce by 0.0025/km × Population-weighted average distance from each Region to the nation's capital. Capped at 7.5 Reduction.
Wars	<6	Increase by number of war enemies. Capped at 3.
	>=6	Increase by number of war enemies that have <6 . Capped at 3.
Peer Rivals	<6	Increase by 0.5 × Peer Rivals (at minimum 1 less Control Point). Capped at 3 - War Base Cohesion Bonus.
	>=6	Increase by 0.5 × Peer Rivals (at minimum 1 less Control Point) that have <6 . Capped at 3 - War Base Cohesion Bonus.
Public vs. Elite Ideology	Always	Reduce by 2 × Distance between Public Opinion vs Control Point owners.
Public Opinion Distribution	Always	Change by -6 × (Standard Deviation of Public Opinion / Worst Possible Standard Deviation - 0.5).
Government	≤ 3.5	Increase by (3.51.285 - Government1.285) × ((10 - Unrest) / 10)
	3.5 < ≤ 5	Reduce by 3 - 2 × (5 - Government)
	5 < ≤ 6.5	Reduce by 3 - 2 × (Government - 5)
	> 6.5	Stabilize (towards global value of 5) by 0.5 × (Government - 6.5)
Owning Hostile Regions	Always	Reduce by 1.6 × Government × Fraction of Population living in Hostile Regions

In other words, Base Cohesion is:

raised by:

• Low Government score, weaker when Unrest is high.
• War enemies that either have <6 Government or our nation has <6 Government. Capped at 3.
• Rivalries with nations no more than 1 control point smaller, that either have <6 Government or our nation has <6 Government. Capped at 3 - the amount already given by the War Base Cohesion Bonus.

centered by:

• High Government score.

changed by:

• Public Opinion distribution.

lowered by:

• Medium Government score.
• High Inequality score, stronger when Education is high.
• Loss of GDP per Capita within the last 10 years.
• Population, worse when the entire Population is confined to just one Region because the nation has no other Regions.
• Geographic Population Distribution.
• Difference between average public opinion and the Factions that own the control points.
• Fraction of Population living in Hostile Regions, multiplied by Government.

Notable Effects of Cohesion

• The Base Unrest of a Nation is reduced by its Cohesion.
• The Research produced by a Nation is multiplied by (1.25 - |Cohesion - 5| / 10). So it is multiplied by 75% at 0 Cohesion and at 10 Cohesion, whereas it is multiplied by 125% at 5 Cohesion.
• The Public Support Cap of a Nation is increased by its Cohesion.
• The Population Growth of a Nation is decreased by its Cohesion.

Underflowing Cohesion

If Cohesion would ever be reduced below 0, then it underflows. This section discusses the effects of such an underflow.

In a nation with 50 million Population:

• Government is reduced by Min(Cohesion Underflow Amount, Max(Government - 5,0)) / 2.
• Unrest is increased by (Cohesion Underflow Amount - Min(Cohesion Underflow Amount, Max(Government - 5,0))) / 2.

In nations with smaller or larger Population, these changes are sped up or slowed down. See Population Scaling for more detail.

Public Opinion

Public Opinion reflects the overall opinion of the typical residents of a given nation, or of Earth generally. Having high public opinion gives a significant boost to a faction, as a built-in source of free Influence and as a bonus on a wide variety of missions. Public opinion can be changed in a wide variety of ways, either positive (such as performing Public Campaign missions) or negative (such as committing atrocities).

For details, see Public Opinion.

Sustainability

A nation's Sustainability value represents its ability to prevent emissions of greenhouse gases into the atmosphere from the economic activity within its borders. It represents the offset from expected emissions of Carbon Dioxide, Methane, and Nitrous Oxide based on the nation's GDP, population, and presence of oil resource regions.

~ Terra Invicta Codex, 0.4.85.

In Terra Invicta, every nation has a Pollution Multiplier that caps at 10. This Pollution Multiplier multiplies:

• The amount of Greenhouse Gases that the nation passively produces each month.
• The amount of Greenhouse Gases that the nation produces whenever it completes the Spoils Priority.

Initially, nations cannot go below 0.3325 Pollution Multiplier. But researching all of the following technologies would reduce this minimum value down to the limit of 0:

• Arrival International Development reduces the minimum by 0.05.
• Designer Lifeforms reduces the minimum by 0.05.
• Integrated Earth-Space Economy reduces the minimum by 0.05.
• Clean Energy reduces the minimum by 0.1.
• Climate Change Mitigation reduces the minimum by 0.1.

In a nation with 50 million Population:

• Each completion of the Spoils Priority adds 0.0005 Pollution Multiplier.
  • This is further increased by 0.0005 per Oil or Mining Region.
• Each completion of the Environment Priority removes 0.005 Pollution Multiplier.
  • Multiplied by Pollution Multiplier / 2 if Pollution Multiplier > 2.
  • Multiplied by Max(0.25, Pollution Multiplier / 0.5) if the Pollution Multiplier < 0.5.
  • Divided by the number of layers of nuclear fallout within the nation, if the nation has any layers of nuclear fallout.

In nations with smaller or larger Population, these changes are sped up or slowed down. See Population Scaling for more detail.

Note: Region damage, such as from natural disasters and war, can rapidly increase a nation's Pollution Multiplier.

A nation's Sustainabilityvalue is calculated as:

• 10 if Pollution Multiplier = 0.
• 9.99+ if (1 / Pollution Multiplier) > 9.99.
• 9.9+ if (1 / Pollution Multiplier) > 9.9.
• 1 / Pollution Multiplier otherwise.

Once a nation reaches 10 Sustainability (0 Pollution Multiplier), the Environment Priority will begin to remove Greenhouse Gases from the atmosphere.

At this point, there is a significant change: the population scaling effect gets inverted. A larger Population is now a boon: the amount of Greenhouse Gases removed whenever the Environment Priority is completed is now multiplied by (the nation's Population / 50 million) ^ 0.35.

Hence, a player who wishes to fix the Climate should aim to make the most populated nations reach 10 Sustainability, and then heavily invest into the Environment Priority.

Inequality

A nation's Inequality score is a measure of how wealth and income is distributed in the nation. High values mean the nation doesn't have much of a middle class. Inequality grows by a little as a product of normal economic activity (the Economy Priority) or by a lot because of corruption (the Spoils Priority). Resource regions in a nation can contribute to inequality. High inequality reduces Cohesion as the nation divides into haves and have-nots. It is countered by use of the Welfare priority.

~ Terra Invicta Codex, 0.4.85.

In a nation with 50 million Population:

• Each completion of the Economy Priority adds 0.00015 Inequality.
  • This is further increased by 0.0001 per Resource Region.
• Each completion of the Spoils Priority adds 0.0025 Inequality.
  • This is further increased by 0.001 per Resource Region.
• Each completion of the Welfare Priority removes 0.005 Inequality.

In nations with smaller or larger Population, these changes are sped up or slowed down. See Population Scaling for more detail.

Inequality score ranges from 1 to 9:

Inequality	Score range
Very Low	1-2
Low	2-3
Moderate	3-4
High	4-5
Very High	5-6
Extreme	6-9

Note: Whenever a nation's Inequality would grow beyond 9, the excess amount is instead subtracted from Cohesion and added to Unrest.

Corruption

Corruption (shown in the Spoils Priority tooltip) determines what percentage of the nation's IP the elites want diverted to the Spoils Priority (Note: Does not account for priority bonuses). If this is not done then Coup d'Etats become easier to perform against the nation, to the point where they might even naturally occur without any faction's involvement. Conversely, assigning more to the Spoils Priority than the elites want will cause them to protect your nation from councilor Coup d'Etat attempts.

Corruption for human nations is calculated as follows:

• 50% base value.
• Decreased by 2.65515% for every point of Government.
• Decreased by 0.57342% for every point of Cohesion.
• Decreased by 0.824624% for every 3000 GDPPC.
• Multiplied by 0.8 if the A Common Concern project has been researched.
  • Note: Only available to The Resistance, The Academy, Project Exodus, and The Servants.
• Capped from below at 5%.

SPOILERS INSIDE!
The Alien Administration always has 0% corruption.

Priorities

The settings in the Priorities tab control the distribution of IP, which represent surplus economic capital generated by the nation.

The owner of each control point may direct a share of IP into any number of priorities, either by selecting a present in the dropdown menu or setting them directly by clicking a spot in the grid.

IP are distributed by setting weights (0,1,2 or 3) for each priority, and the amount of IP going to a particular priority depends on the total number of weights set for a particular control point.

IP gradually fill buckets for each priority; once filled, the nation receives the effects of that priority, and in most cases it may be filled again.

Some priorities will be highlighted red if they are considered critical to the nation.

List of Priorities

Priority	IP cost	Requirements	Effects	Pop Scaled
Economy	1	None	GDPPC by 3 + (1.5 per Mining Region) + (1.5 per Oil Region) + (1.5 per Core Economic Region) + (0.5 per Government) + Education	Yes
			Inequality by 0.00015 + 0.0001 per Mining Region + 0.0001 per Oil Region	Yes
			Regions may be Improved into Core Economic, Mining or Oil Regions after sufficient investment	No
			Base Metals and Noble Metals Market Prices	No
Welfare	1	None	Inequality by 0.005	Yes
		Has Colony Regions	One Colony Region loses Colony status every 1000 completions	No
Environment	1	10 Sustainability	Greenhouse Gases	Inverted
		<10 Sustainability	Pollution Multiplier by -0.005 / Max(1, total layers of Fallout) × Pollution Multiplier / 2 if the Pollution Multiplier > 2 × Max(0.25, the Pollution Multiplier / 0.5) if the Pollution Multiplier < 0.5	Yes
		Transform Phages researched At least one Region has Fallout	One Region loses a layer of Fallout every 100 completions	No
Knowledge	1	None	Education by 0.005 × 8.5 / Education if Education < 8.5 × 12 / Education if Education > 12	Yes
			Cohesion centered by 0.01	Yes
Government	1	<10 Government	Government by 0.001 per Education	Yes
		10 Government	Same as Knowledge Priority	Yes
		Has Hostile Regions	One Hostile Region loses Hostility every 200 completions (shared with Unity Priority).	No
Unity	2	None	Cohesion by Max(0.025, 0.1 - 0.005 × Education - 0.005 × Government)	Yes
			Education by 0.001	Yes
			For each faction that owns any control points: Apply Propaganda of strength 5 × number of control points owned by faction (Religion counts as 4 control points)	Yes
		Has Hostile Regions	One Hostile Region loses Hostility every 200 completions (shared with Government Priority).	No
Military	1	Found Military Completed in Nation	Miltech by 0.00125 / Miltech × Best Human Nation's Miltech	No
Oppression	1	Found Military Completed in Nation	Government by 0.0025	Yes
			Unrest by (0.1 - Government / 100) × 3	Yes
		Found Military Completed in Nation and >5 Government	Cohesion by 0.025 × (Government - 5)	Yes
Spoils	1	None	Inequality by 0.0025 + 0.0015 per Mining Region + 0.0015 per Oil Region	Yes
			Government by 0.0005	Yes
			For each faction that owns any control points: Apply Propaganda of strength - 0.125 × (Education + Government) × fraction of control points owned by faction	No
			Pollution Multiplier by 0.0005 + 0.00075 per Mining Region + 0.00075 per Oil Region	Yes
			Greenhouse Gases	Yes
		Control Points Not Cracked	Each Faction's Money by (5 × Monthly IP + 5 per Mining Region + 5 per Oil Region + 2.5 × (10 - Government)) × fraction of control points owned by faction	No
Funding	1	None	Annual Money Production by 10 + max(round(((GDP in billions)^0.18)/1.09),1)	No
Boost	2	Found Space Program Completed in Nation	Annual Boost Production by 0.4 - (Launch Facility Latitude / 250)	No
Mission Control	25	Found Space Program Completed in Federation	Mission Control by 1	No
Found Space Program	50	None	Annual Boost Production by 0.1	No
Found Military	40	None	Set Miltech to the Max of: 2 Worst Federation Member's Miltech - 0.3 Worst Ally's Miltech - 0.3 Worst Human Nation's Miltech	No
Build Army	60	Found Military Completed in Nation >(5 + 25 × Armies) Population in Millions Has a non-colony Region without its own Army	Builds an Army	No
			Base Metals and Noble Metals Market Prices	No
Build Navy	100	Found Military Completed in Nation >4 Control Points, or 3 Control Points and >40000 GDPPC Has an Army without its own Navy	Attaches Navy to an Army	No
			Base Metals and Noble Metals Market Prices	No
Develop Atomic Bomb	80	None	Nuclear Weapons by 1	No
			Fissiles Market Prices	No
			Aerosols by 0.0000777ppm	No
			Each Owning Faction Commits 1 Atrocity	No
Nuclear Weapons	40	Develop Atomic Bomb Completed in Nation	Nuclear Weapons by 1	No
			Fissiles Market Prices	No
Space Defenses	25 to 100 (scaled by region size)	Trans-Interface Warfare researched	Builds a Space Defense Facility	No
Build Exofighter	10	Exoatmospheric Fighters researched Has a Region not at Maximum Exofighters	Builds an Exofighter	No

Diversity Bonus

Each control point independently gains a small diversity bonus to each of its priorities based on how much it is personally investing into other nation building priorities.

Priority	Diversity Multiplier
Economy Priority	50%
Welfare Priority	20%
Environment Priority	20%
Knowledge Priority	20%
Government Priority	20%
Unity Priority	20%
Military Priority	20%

Each of these nation building priorities adds a diversity bonus of X% to all other priorities, where X% is calculated as its (Diversity Multiplier × Pips in the priority for this control point ÷ Total pips for this control point).

For example, suppose a control point has 3 pips in the Economy Priority, 1 pip in the Welfare Priority, and 1 pip in the Spoils Priority, for a total of 5 pips. Then:

• The Economy Priority adds a diversity bonus of 50% × 3 ÷ 5 = 30%.
• The Welfare Priority adds a diversity bonus of 20% × 1 ÷ 5 = 4%.
• The Spoils Priority adds no diversity bonus, because it is not a nation building priority.

Thus:

• The Economy Priority receives a diversity bonus of 4% (because it cannot receive the 30% from itself).
• The Welfare Priority receives a diversity bonus of 30% (because it cannot receive the 4% from itself).
• The Spoils Priority receives a diversity bonus of 30% + 4% = 34%.

Note: This diversity bonus is additive with other bonuses to nation priorities. Specifically, whenever a control point would put any IP into any priority, the amount of IP that is actually put into the priority is multiplied by:

100% + Priority Bonus from Orgs + Priority Bonus from Traits + Priority Bonus from Earth Interface Hab Modules + Priority Bonus received from Diversity + Priority Bonus from Projects + Priority Bonus from Federation + Priority Bonus from Mining Regions 

Direct Investment

Direct Investment allows a faction to purchase IP in a certain priority with Money, Influence, and/or Ops. The number of IP that may be purchased each calendar year in any nation is capped at 12 × (Population in Millions × 48.75) ^ 0.175 × (GDP in Billions)^0.175, rounded to the nearest integer. Each priority type is affected by a number of distinct cost multipliers, shown at the bottom of this section.

Base Direct Investment Costs for each Nation Priority

Priority	Money Cost	Influence Cost	Ops Cost
Economy Priority	GDPPC Increase Per Completion × Population in Millions / Required IP	25	0
Welfare Priority	360000 / 67 × Inequality Decrease Per Completion × Population in Millions / Required IP	100	0
Environment Priority	150000 × Pollution Multiplier Decrease Per Completion × (Population / 50 million) ^ 0.35 / Required IP	100	0
Knowledge Priority	625 / 41 × Population in Millions / (Population / 50 million) ^ 0.35 / Required IP	100	0
Government Priority	150000 × Government Increase Per Completion × (Population / 50 million) ^ 0.35 / Required IP	300	0
Unity Priority	400 × (Population / 50 million) ^ 0.35 / Required IP	300 / Required IP	0
Oppression Priority	0	50 × Max(1, Government) × Required IP / (Population / 50 million) ^ 0.35	30 / (1 + Min(2, Miltech / 10))
Funding Priority	0	5 × Funding Increase Per Completion / Required IP	0
Found Space Program Priority	2800 / Required IP	2500 / Required IP	0
Boost Priority	1250 / Required IP	100 / Required IP	0
Mission Control Priority	2500 / Required IP	800 / Required IP	0
Found Military Priority	2000 / Required IP	2000 / Required IP	1500 / Required IP
Military Priority	250 × Miltech / Required IP	250 / Required IP	30 × Miltech / Required IP
Build Army Priority	10000 × Miltech / Required IP	3000 / Required IP	2000 × Miltech / Required IP
Build Navy Priority	1200 × Miltech / Required IP	3000 / Required IP	1500 × Miltech / Required IP
Develop Atomic Bomb Priority	30000 / Required IP	3000 / Required IP	300 / Required IP
Nuclear Weapons Priority	5000 / Required IP	1500 / Required IP	150 / Required IP
Space Defenses Priority	2500 / Required IP	800 / Required IP	600 / Required IP
Build Exofighter Priority	1000 / Required IP	200 / Required IP	150 / Required IP

Direct Investment Cost Multipliers

Category	Conditions	Money Cost Multiplier	Influence Cost Multiplier	Ops Cost Multiplier
Corruption	None	1.2 + Corruption × 0.9	1 + Corruption × 0.75	1
Projects	Researched	1 - 0.15 for Transnational Investments - 0.15 for Adaptive FDI Modeling	1 - 0.25 for Strategic Lobbying - 0.25 for Regulatory Capture	1
Recently Conquered	Within 365.25 days Not Oppression Priority Not Funding Priority	1	0.5	1
Nation Ownership	Not Cracked	1	1 - 0.5 × Fraction of Control Points Owned	1
Control Point Capacity Cost	Not Alien Nation Not Funding Priority	1	0.1 × Single Control Point Control Point Capacity Cost	1
National Priority Bonuses	Not from Federation Not from Diversity	1 / (1 + Bonus)	1 / (1 + Bonus)	1 / (1 + Bonus)
Federation Bonus	Economy Priority Only	1 / (1 + Bonus)	1 / (1 + Bonus)	1 / (1 + Bonus)
Nation Mining Regions	Build Army Priority and Build Navy Priority Only	1 / (1 + 0.05 per Mining Region)	1 / (1 + 0.05 per Mining Region)	1 / (1 + 0.05 per Mining Region)

Elites

Each nation requires a certain percentage of IP to be put into the Spoils Priority. Failing to provide enough IP into Spoils Priority, shown by the priority becoming red, increases the chance of a coup. See Nations#Corruption for details on how this percentage is calculated.

Control Points

Control Points represent key nodes of political and economic power in a nation.

The faction that owns a control point has loyal followers in positions of authority. Control points grant their faction a portion of the nation's critical resources, control over the nation's armies, and the ability to direct investment priorities.

The Research, Boost, Mission Control and Money (from funding and spoils) produced by the nation is divided up equally among all of its control points. Control points that have sustained a Crackdown or are abandoned still get their share, but the owning faction does not receive it.

If there are Armies controlled by the nation, owning a control point may also grant you direct control of said Armies. Control Points with Armies attached to them are shown with the symbol. If there is more than one Army attached to a control point then the number of attached Armies is shown over the symbol.

Certain powerful policies, such as joining and leaving federations and merging nations, require Consolidated control of the executive, which means the executive faction either gained control of the nation through violent means such as war or revolution, or must have held continuous control of the executive control point for 180 days.

Number of Control Points

The number of control points is based on the nation's GDP, specifically:

Number of Control Points = max(1,min(round(((GDP in billions)^0.18)/1.09),6))

GDP (Bn)	Control Points
0-15.4	1
15.4-263	2
263-1701	3
1701-6869	4
6869-20944	5
20944+	6

Whenever a nation's GDP grows to the point where it would gain a new control point, the new control point is added to the left and assigned to the same faction that controls the executive control point.

Whenever a nation's GDP shrinks to the point where it would lose a control point, the leftmost control point is removed.

Cost of Control Points

The Control Point Capacity cost of a control point is also based on the nation's GDP, specifically:

Total Cost of Control Points = (GDP in billions) ^ 0.6 / 2

This total Control Point Capacity cost is divided up evenly among all the control points of the nation.

Control points that have sustained a Crackdown or are abandoned do not cost any Control Point Capacity.

When a faction exceeds their Control Point Capacity, they suffer the following penalties:

• Certain Missions against the faction gain a bonus attack mission modifier of Control Point Capacity overcap / 3. These Missions are:
  • Crackdown
  • Purge

SPOILERS INSIDE!
Enthrall Elites Dominate Nation

• The faction's annual Influence income decreases by Control Point Capacity overcap ^ 2.

Taking Control Points

To gain control over a neutral Control Point, one usually performs a successful Control Nation mission with one of their Councilors. Under normal circumstances, in nations with more than one Control Point, the executive Control Point can only be controlled if you already have a Control Point in a nation and it is the last Control Point to be taken. If every nation has all of their Control Points controlled by Factions, then the Control Nation mission becomes unavailable. In that case you would need to perform a successful Purge mission on an enemy Control Point.

To increase Purge success chances, it is recommended to conduct Crackdown on these Control Points first. Another alternative to Control Nation is Coup d'Etat. It can either be performed with your councilor or happen naturally. See Nations#Effects_of_a_Coup for the effects of a coup, including the distribution of control points when a coup occurs. Coup d'Etat has a higher success chance in nations with high Unrest, so Increase Unrest missions can be very helpful.

One more alternative is to simply use war. When armies conquer a nation's capital region, all control points in the nation switch owners to whichever faction conquered them.

Control Point Types

Control points come in a variety of types. Their type depends on the national Government and other conditions, and provides a related bonus for the faction controlling it.

Control Point Types for Human Nations, the conditions under which they appear, and what benefits they give to their Faction.

Position (from the Right)	Conditions	Control Point Type	Benefits
1st	None	Executive	Allows Set National Policy missions. Allows setting Nation allies and rivals. Gives full control of Nation's Nuclear Weapons. Gives full control of Nation's Exofighters. Gives full control of Nation's choices in response to Events. Gives full control of Nation's choices in response to incoming requests for joining wars, allying, and federating.
2nd	≥5 Government	Legislature	If Faction also owns the Executive, then +3 Bonus Defense against all Purge and Dominate Nation Missions targeting the Executive. Otherwise, the faction gains +3 Bonus Attack on its Purge Missions targeting the Executive.
	≥6 Education and ≥7 Cohesion	Party	+3 Bonus Defense against all Purge and Dominate Nation Missions targeting each non-Executive control point owned by the Faction. +3 Bonus Attack on the Faction's Purge Missions targeting each non-Executive control point.
	≥6 Education and <7 Cohesion	Oligarchs	If Faction also owns the Executive, then +3 Bonus Defense against all other factions' Coup Missions targeting the Nation. +3 Bonus Attack on the Faction's Coup Missions targeting the Nation.
	Else	Aristocracy	+20% Nation Spoils Money Output for Faction.
3rd	<5 Government	Security Apparatus	+3 Bonus Defense against all Extract Councilor Missions targeting councilors that are detained by the Faction within the Nation. +3 Bonus Attack on the Faction's Assassinate, Crackdown, Detain, and Extract Councilor Missions within the Nation.
	≥7 Education	Mass Media	+3 Bonus Attack on the Faction's Public Campaign and Dominate Nation missions within the Nation.
	Else	Religion	+15 Propaganda Strength for Unity Priority's Propaganda for Faction. (Affected by Population Scaling.)
4th	<4 Government	National Industries	+3 Bonus Defense against all Hostile Takeover Missions targeting Orgs owned by the Faction within the Nation. +3 Bonus Attack on the Faction's Hostile Takeover Missions within the Nation.
	<3.5 Inequality and >10000 GDPPC and >7 Education	Trade Unions	Orgs based in the same nation cost 20% less Influence for Faction to purchase.
	Else	Corporations	Orgs based in the same nation cost 20% less Money for Faction to purchase.
5th	>6 Cohesion	Bureaucracy	+3 Bonus Attack on the Faction's Control Nation missions within the Nation.
	>3 Cohesion	Regional Authorities	+3 Bonus Attack on the Faction's Stabilize Nation missions within the Nation.
	>1 Cohesion or <7 Unrest	Identity Blocs	+3 Bonus Attack on the Faction's Increase Unrest missions within the Nation.
	Else	Warlords	+6 Bonus Attack on the Faction's Increase Unrest missions within the Nation.
6th	>9 Government and >9 Education	Knowledge Sector	+5% Nation Research Output for Faction.
	>6 Cohesion and Nation has a rival or war enemy which has at least the same number of control points.	Defense Sector	Faction's Armies that belong to this Nation gain +0.005 daily heal rate.
	>6 Government and >7 Education	Financial Sector	+5% Nation Funding Money Output for Faction.
	Nation has at least 1 Oil or Mining Region	Extractive Sector	Nation Spoils Money Output for Faction increased by 2 × Number of Oil or Mining Regions × Number of Control Points owned by Faction in Nation. Not affected by Aristocracy bonus.
	Else	Agricultural Sector	Nothing.

SPOILERS INSIDE!
The Alien Nation does not have any special control point types or bonuses. Though naturally the Aliens still receive all of the benefits that an Executive Control Point grants.