View source for Regions

<i>This page mainly discusses the game mechanics for regions. For a list of all regions in Terra Invicta, as well as their initial stats, see [[Region List]] instead.</i>

Regions are geographic areas that make up a [[Nations|nation]].

The tab also includes information about the {{TV|boost}} and {{TV|mc}} resources that are based in each region.

The claims column lists other [[Nations]] that may annex a territory.

[[Events]], [[Terrestrial_Warfare|combat]], [[Councilors|councilor]] [[Missions|activity]] location and the presence of launch facilities or other installations all occur in a particular region rather than nationwide.

== Characteristics ==
Regions may have the following characteristics:
{| class="wikitable"
|-
! Characteristic !! Icon !! Effects
|-
| Capital Region || {{icon|capital|bgcolor=DarkSlateGray}} || 
* Councilor [[Missions]] targeting the nation as a whole or its control points will usually take place here.
* Conquering the capital of a nation in a [[Foreign_Relations#Wars|War]] will trigger regime change and annexation of any [[Foreign_Relations#Claims|Claimed]] territory by its enemies.
|-
| Colony Region || {{icon|colony|bgcolor=DarkSlateGray}} ||
* [[Nations#GDP_Per_Region|Gets only half of its fair share of the nation's GDP.]]
* Cannot have its own [[Nations#Armies|Armies]].
|-
| Core Oil Region || {{icon|oil|bgcolor=DarkSlateGray}} ||
* [[Nations#GDP_Per_Region|Gets 125% of its fair share of the nation's GDP.]]
* Increases [[Climate_Change#Greenhouse_Gas_(GHG)_Sources|Monthly Pollution]] for its Nation.
* Increases the {{TV|economy}}'s effects on {{TV|gdppc}} and {{TV|inequality}}.
* Increases the {{TV|spoils}}'s effects on {{TV|sustainability}} and {{TV|inequality}}, but also increases the {{TV|money}} produced.
|-
| Core Mining Region || {{icon|resource region|bgcolor=DarkSlateGray}} ||
* [[Nations#GDP_Per_Region|Gets 125% of its fair share of the nation's GDP.]]
* Increases the {{TV|economy}}'s effects on {{TV|gdppc}} and {{TV|inequality}}.
* Increases the {{TV|spoils}}'s effects on {{TV|sustainability}} and {{TV|inequality}}, but also increases the {{TV|money}} produced.
* Give {{TV|build army|+5%}} and {{TV|build navy|+5%}}
|-
| Core Economic Region || {{icon|core economic region|bgcolor=DarkSlateGray}} ||
* [[Nations#GDP_Per_Region|Gets 125% of its fair share of the nation's GDP.]]
* Increases the {{TV|economy}}'s effects on {{TV|gdppc}}.
* Give {{TV|miltech|0.1}} to defending armies (including the region defense forces). 
* Give {{TV|miltech|0.125}} to armies whose factions have researched [[Urban Warfare Doctrine]].
|-
| Rugged Region || {{icon|rugged|bgcolor=DarkSlateGray}} ||
* Give {{TV|miltech|0.2}} to defending armies (including the region defense forces). 
* Give {{TV|miltech|0.125}} to armies whose factions have researched [[Mountain Warfare Doctrine]].
* Increase Annex Region operation duration by 25%.
* Increases [[Terrestrial_Warfare#Army_Movement|Army travel duration]] to and from region.
* Increase defenses of non-[[Aliens#Alien_Xenoforming|Xenoflora]] Alien Assets in region against Army Assault operations.
* Halve the Daily [[Aliens#Alien_Xenoforming|Xenoflora]] Growth cap in region.
|-
| Ecologically Protected Region || {{icon|ecologically protected region|bgcolor=DarkSlateGray}} ||
* Will not (directly) suffer economic loss from [[Climate_Change#Nation_Effects|Climate Change]].
* Will suffer only half the {{icon|pop}}[[Nations#Population_Growth|population growth]] penalty from extreme climate temperatures.
|-
| Ecologically Vulnerable Region || {{icon|ecologically vulnerable region|bgcolor=DarkSlateGray}} ||
* Will suffer twice the economic loss from [[Climate_Change#Nation_Effects|Climate Change]].
* Will suffer twice the {{icon|pop}}[[Nations#Population_Growth|population growth]] penalty from extreme climate temperatures.
|-
| Alien Activity || {{icon|alien activity|bgcolor=DarkSlateGray}} ||
* Indicates that some form of alien activity has been detected in this region.
* No real effects.
|-
| Fallout || {{icon|fallout|bgcolor=DarkSlateGray}} ||
* Prevents certain region improvements.
* Reduces the {{TV|environment}}'s effect on {{TV|sustainability}}.
* -4% {{icon|pop}}[[Nations#Population_Growth|population growth]] penalty per layer of fallout.
|-
|}

== Improving Regions ==

{| class="wikitable sortable"
|-
! Improvement !! Conditions !! Nation Priority !! Completions Needed 
|-
| Set to {{icon|oil}} Oil Region
| 
* Cannot be {{icon|core economic region|bgcolor=DarkSlateGray}} Core Economic Region or {{icon|resource region}} Core Mining Region.
* Cannot have Fallout.
* Marked as Oil Capable in [[Region List|the game template files]].
| rowspan=3|{{icon|economy}} Economy<ref>Always prioritizes making {{icon|oil}} Core Oil, then {{icon|resource region}} Core Mining, then finally {{icon|core economic region|bgcolor=DarkSlateGray}} Core Economic Regions</ref>
| 500
|-
| Set to {{icon|resource region}} Core Mining Region
| 
* Cannot be {{icon|core economic region|bgcolor=DarkSlateGray}} Core Economic Region or {{icon|oil region}} Core Oil Region.
* Cannot have Fallout.
* Marked as Mining Capable in [[Region List|the game template files]].
| 750
|-
| Set to {{icon|core economic region|bgcolor=DarkSlateGray}} Core Economic Region<ref>Removes Core Oil and Core Mining Statuses.</ref>
| 
* Cannot be {{icon|colony|bgcolor=DarkSlateGray}} Colony Region.
* Cannot have Fallout.
* Has >500 Billion [[Nations#GDP_Per_Region|Region GDP]]
| 1200
|-
| Remove {{icon|colony|bgcolor=DarkSlateGray}} Colony Status<ref>Can also be removed (or regained) through [[Foreign Relations#Effects_of_Transferring_Regions|Region Transfers]] between Nations.</ref>
| None
| {{icon|welfare}} Welfare
| 1000
|-
| Remove one layer of Fallout
| None
| {{icon|environment}} Environment
| 100
|-
|}

Note: If multiple regions are valid targets for an improvement type, the one with the highest [[Nations#GDP_Per_Region|Region GDP]] is usually improved first.

<references />

== World Ocean Access ==

Some regions may allow armies in them to access the world oceans. The [[Region List|game template files]] include a variable for each region indicating when they allow such access:
* Some regions never allow armies in them to access the world oceans. These regions are typically inland regions.
* Some regions always allow armies in them to access the world oceans. These regions are typically island or coastal regions that are near the equator.
* Some regions only allow armies in them seasonal access to the world oceans. These regions are typically island or coastal regions that are near the poles.

In the case of seasonal access, regions in the northern hemisphere allow access only from April to September, whereas regions in the southern hemisphere allow access only from October to March.

Notably, if the [[Climate Change|temperature anomaly]] exceeds 1.9C, the [[Arctic Melt Accelerates]] event can trigger. This event causes every region that has seasonal world ocean access to gain permanent world ocean access.

== Facilities ==

Facilities are constructed in a nation's regions following certain priorities and can be attacked via the {{MissionIcon|Sabotage Facilities}}[[Sabotage Facilities]] councilor mission, Assault Space Facility army mission, or orbital bombardment.
* '''Launch Complex''' produces {{TV|boost}}.
* '''Mission Control Facility''' produces {{TV|mc}}.
* {{icon|sto defense|bgcolor=DarkSlateGray}}[[Nations#Space_Defenses|'''Space Defense Array''']] prevents {{TV|nukes}} from being used in the region and will fire back if the region is being bombarded. It may also prevent {{icon|alien}}[[Aliens|Alien]] ships in orbit from executing certain operations. See [[Aliens]] for details.

== Alien Assets ==
Alien Assets in a targeted region and can be attacked via the [[Assault Alien Asset]] mission or destroyed by orbital bombardment. See [[Aliens]] for more details on the different types of Alien Assets.

=== Alien Life Forms ===
Alien Life Forms, or Xenoforming as it is sometimes called, is an alien asset created by one of the alien councilors' missions. It has negative effects population growth and grants bonuses to Servant and Alien activities in a nation. It passively grows over time and spreads to adjacent regions.

See [[Aliens#Alien_Xenoforming]] for more details.

{| class="wikitable"" style="text-align: center;"
|-
! Xenoflora Growth Levels 
| < 30 || Between 30 and 75 || > 75
|-
! Image 
| [[File:Location XenoformingLow.png|200px]] || [[File:Location XenoformingMed.png|200px]] || [[File:Location XenoformingHigh.png|200px]]
|}

== Region Damage ==

Whether deliberately or by accident, regions in Terra Invicta can be heavily damaged through the actions of the different factions, especially when they wage wars over the Earth. 

=== Effects of Region Damage ===

Note: Region damage almost always has strength between 0 and 1. If anything attempts to apply region damage of negative strength, nothing happens.

{| class="wikitable"
|+ Effects of an X Strength Non-Nuclear Attack on a Region (In Chronological Order)
|-
! Category !! Conditions !! Amount 
|-
| Target [[Nations#GDP_Per_Region|Region GDP]] || None || X × (-7.5% to -12.5%) 
|-
| Target [[Nations#Population|Region Population]] {{icon|pop}} || None || X × (-0.075% to -0.125%) 
|-
| Target Nation [[Nations#Sustainability|Pollution Multiplier]] {{icon|sustainability|bgcolor=DarkSlateGray}} || None || X × (+0.0000075 to +0.0000125) × [[Nations#GDP_Per_Region|Region GDP]] / [[Nations#GDP|Nation GDP]]
|-
| Responsible Faction Commits [[Factions#Atrocity|Atrocities]] || [[Nations#Population|Population]] {{icon|pop}} killed >= 100k. || 1 per 100k [[Nations#Population|Population]] {{icon|pop}} killed, capped between 1 and 20.
|-
| rowspan=3 | Target Nation [[Nations#Priorities|Priorities]] || X >= 0.9 || Multiply IP invested by (1 - X) for all priorities except Spoils {{icon|spoils}}, Unity {{icon|unity}}, and Oppression {{icon|oppression}}.
|-
| 
* X < 0.9.
* An X × 500% roll passes.
* Target Region is not a Colony Region {{icon|colony|bgcolor=DarkSlateGray}}.
| Multiply IP invested by (1 - X) for one random priority that is not Spoils {{icon|spoils}} or Unity {{icon|unity}}.
|-
| 
* X < 0.9.
* An X × 500% roll passes.
* Target Region is a Colony Region {{icon|colony|bgcolor=DarkSlateGray}}.
| Multiply IP invested by (1 - 0.5X) for one random priority that is not Spoils {{icon|spoils}} or Unity {{icon|unity}}.
|-
| rowspan=2 | Target [[Nations#Boost|Boost]] {{icon|boost|bgcolor=DarkSlateGray}} Production || 
* Target Nation is NOT Responsible Nation.
* X >= 0.75.
| -100%
|-
| An X × 100% roll passes. || X × -100%
|-
| rowspan=2 | Target [[Nations#Mission_Control|Mission Control]] {{icon|mc|bgcolor=DarkSlateGray}} || 
* Target Nation is NOT Responsible Nation.
* X >= 0.75.
| -100%
|-
| An X × 100% roll passes. || -1
|-
| rowspan=2 | Target [[Nations#Space_Defenses|Space Defenses]] {{icon|sto defense|bgcolor=DarkSlateGray}} || 
* Target Nation is NOT Responsible Nation.
* X >= 0.75.
| Destroy
|-
| An X × 100% roll passes. || Destroy
|-
| Target Nation [[Nations#Funding|Funding]] {{icon|funding}} || Target Nation is NOT Responsible Nation. || -10% × X × [[Nations#GDP_Per_Region|Region GDP]] / [[Nations#GDP|Nation GDP]]  
|- 
| Health of Each Army in Target Region || Army is not Ally of Region Damager || X × -100%
|-
| Target [[Aliens#Xenoforming|Alien Xenoforming]] || Responsible Faction is not [[Aliens]] or [[The Servants]] || -X × Xenoflora Growth Levels 
|}

Note: An army is an ally of the region damager if any of the following are true:
* The army is owned by the responsible nation.
* The army is owned by an ally of the responsible nation.
* The army is owned by the responsible faction and not a [[Aliens#Megafauna|Megafauna]].

See [[Terrestrial_Warfare#Nuclear_Warfare|Nuclear Warfare]] for the effects of a nuclear attack on the region.

=== Sources of Region Damage ===

These include but are not limited to:

{| class="wikitable"
|-
! Category !! Conditions !! Strength !! Special Notes 
|-
| Non-[[Aliens#Megafauna|Megafauna]] Enemy Army || Each Day Fighting in Region || Max(1, 12 - Effective {{TV|miltech}}) / 50000 × (1 to 100) || Cannot cause damage to armies through this region damage. 
|- 
| [[Aliens#Megafauna|Megafauna]] Enemy Army || Each Day Fighting in Region || {{TV|miltech}} × Health % / 2000 || Cannot cause damage to armies through this region damage. 
|-
| Non-[[Aliens#Megafauna|Megafauna]] Army || Each Day Fighting Another Army in Region || (10 - Effective {{TV|miltech}}) / 50000 × (1 to 3) || Cannot cause damage to armies through this region damage. 
|-
| [[Aliens#Megafauna|Megafauna]] Army || Each Day Fighting Another Army in Region || (10 - Effective {{TV|miltech}}) / 500 × (1 to 3) || Cannot cause damage to armies through this region damage.
|-
| rowspan=2 | Revolution || Region is the Capital {{icon|capital|bgcolor=DarkSlateGray}} || 0 to 0.5 || None
|-
| Region is not the Capital {{icon|capital|bgcolor=DarkSlateGray}} || 0 to 0.25 || None
|-
| rowspan=2 | 
{{SpoilerBox}} 
[[Aliens#Alien_Administration|Alien Nation]] Overthrown 
{{SpoilerBoxEnd}} 
| Region is the Capital {{icon|capital|bgcolor=DarkSlateGray}} || 0 to 0.5 || Cannot cause damage to armies through this region damage.
|-
| Region is not the Capital {{icon|capital|bgcolor=DarkSlateGray}} || 0 to 0.25 || Cannot cause damage to armies through this region damage.
|-
| Bombardment of Armies || Weapon Chip % Chance || Attack Damage / 500000, capped at 0.001 || Cannot cause damage to armies through this region damage.
|-
| Bombardment of Regions || Each Attack || Attack Damage / 10000, capped at 0.05 || Cannot cause damage to armies through this region damage.
|-
| Raze Region Army Operation || On Completion || Army Home Nation's {{TV|miltech}} / 10 × Army Health % || Automatically passes rolls against [[Nations#Boost|Boost]] {{icon|boost|bgcolor=DarkSlateGray}}, [[Nations#Mission_Control|Mission Control]] {{icon|mc|bgcolor=DarkSlateGray}}, and [[Nations#Space_Defenses|Space Defense]] {{icon|space defenses|bgcolor=DarkSlateGray}} Facilities.
|-
| rowspan=2 | 
{{SpoilerBox}} 
{{MissionIcon|Dominate Nation}}[[Dominate Nation]] Mission
{{SpoilerBoxEnd}} 
| Normal Failure || 0.4 || Automatically passes rolls against [[Nations#Boost|Boost]] {{icon|boost|bgcolor=DarkSlateGray}}, [[Nations#Mission_Control|Mission Control]] {{icon|mc|bgcolor=DarkSlateGray}}, and [[Nations#Space_Defenses|Space Defense]] {{icon|space defenses|bgcolor=DarkSlateGray}} Facilities.
|-
| Critical Failure || 0.9 || Automatically passes rolls against [[Nations#Boost|Boost]] {{icon|boost|bgcolor=DarkSlateGray}}, [[Nations#Mission_Control|Mission Control]] {{icon|mc|bgcolor=DarkSlateGray}}, and [[Nations#Space_Defenses|Space Defense]] {{icon|space defenses|bgcolor=DarkSlateGray}} Facilities.
|-
|
{{SpoilerBox}} 
{{MissionIcon|Terrorize}}[[Terrorize Region]] Mission
{{SpoilerBoxEnd}} 
| None || 0.01 to 0.07 || None
|-
| rowspan = 5 | Random [[Events]]
| "a small amount of damage" || 0.0095 to 0.0105 || rowspan = 5 | None
|-
| "limited damage" || 0.0475 to 0.0525 
|-
| "major damage" || 0.09 to 0.11
|-
| "massive damage" || 0.1875 to 0.3125
|-
| "near-total destruction" || 0.675 to 0.825
|}

<references />

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