Regions

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.

Regions are geographic areas that make up a nation.

The tab also includes information about the Boost and Mission Control resources that are based in each region.

The claims column lists other nations that may annex a territory.

Events, combat, councilor 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:

• Capital Region: Missions targeting the nation as a whole or its control points will take place here. Conquering the capital of a nation in wartime will trigger regime change and annexation of any claimed territory by its enemies.
• Colony Region: Colony regions carry a lesser status within their nation, typically due to past imperial behavior by that nation. They contribute less to the national GDP and cannot support armies. Colonial status is lost if the region becomes an independent nation or joins a nation with a similar GDP.
• Core Economic Region: Core economic regions grant a bonus to the Economy policy.
• Resource Region: Resource regions grant a bonus to the nation's Economy priority, but also cause greater increases in inequality and environmental damage.
• Rugged: Rugged regions take twice as long for an army to travel through, and offer significant combat bonuses for defending armies.
• Ecologically Protected Region: These regions, typically in high latitudes in the northern hemisphere, will not suffer economic loss due to global environmental damage. They will also suffer only half the population growth penalty from extreme climate temperatures (more than 8 degrees).
• Ecologically Vulnerable Region: Vulnerable regions suffer twice as much economic harm from global environmental damage as normal regions. They will also suffer twice the population growth penalty from extreme climate temperatures (more than 8 degrees).
• Alien Activity: Some form of alien activity has been detected in this region.
• Fallout: This area has been struck by nuclear barrages. Regions damaged in this way suffer a significant loss in population growth due to radiation and contaminated food and water supply. This can only be removed via a massive investment in the Environment priority.

Improving Regions

Improvement	Conditions	Nation Priority	Number of Completions Needed
Set to Oil Region	Cannot be Core Economic Region or Core Mining Region. Cannot have Fallout. Marked as Oil Capable in the game template files.	Economy	500
Set to Core Mining Region	Cannot be Core Economic Region or Core Oil Region. Cannot have Fallout. Marked as Mining Capable in the game template files.		750
Set to Core Economic Region	Cannot be Colony Region. Cannot have Fallout. Has >500 Billion Region GDP		1200
Remove Colony Status	None	Welfare	1000
Remove one layer of Fallout	None	Environment	100

Facilities and Alien Assets

Facilities are constructed in a nation's regions following certain priorities and can be attacked via the Sabotage Facility councilor mission, Assault Space Facility army mission, or orbital bombardment.

• Launch Complex produces Boost.
• Mission Control Facility produces Mission Control.
• Space Defense Array prevents Strategic Nuclear Barrages from being used in the region and will fire back if the region is being bombarded.

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.

Xenoflora Growth Levels	< 30	Between 30 and 75	> 75
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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.

Effects of an X Strength Non-Nuclear Attack on a Region (In Chronological Order)

Category	Conditions	Amount
Target Region GDP	None	X × (-7.5% to -12.5%)
Target Region Population	None	X × (-0.075% to -0.125%)
Target Nation Pollution Multiplier	None	X × (+0.0000075 to +0.0000125) × Region GDP / Nation GDP
Responsible Faction Commits Atrocities	Population killed >= 100k.	1 per 100k Population killed, capped between 1 and 20.
Target Nation Priorities	X >= 0.9	Multiply IP invested by (1 - X) for all priorities except Spoils, Unity, and Oppression.
	X < 0.9. An X × 500% roll passes. Target Region is a Colony Region.	Multiply IP invested by (1 - X) for one random priority that is not Spoils or Unity.
	X < 0.9. An X × 500% roll passes. Target Region is not a Colony Region.	Multiply IP invested by (1 - 0.5X) for one random priority that is not Spoils or Unity.
Target Boost Production	Target Nation is NOT Responsible Nation. X >= 0.75.	-100%
	An X × 100% roll passes.	X × -100%
Target Mission Control	Target Nation is NOT Responsible Nation. X >= 0.75.	-100%
	An X × 100% roll passes.	-1
Target Space Defenses	Target Nation is NOT Responsible Nation. X >= 0.75.	Destroy
	An X × 100% roll passes.	Destroy
Target Nation Funding	X < 0.75	-10% × X × Region GDP / Nation GDP
Health of Each Army in Target Region	Army is not Ally of Region Damager	X × -100%
Target 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 Megafauna.

See Terrestrial_Warfare#Nuclear_Warfare for the effects of a nuclear attack on the region.

Sources of Region Damage

These include but are not limited to:

Category	Conditions	Strength	Special Notes
Non-Megafauna Enemy Army	Each Day Fighting in Region	Max(1, 12 - Effective Miltech) / 50000 × (1 to 100)	Cannot cause damage to armies through this region damage.
Megafauna Enemy Army	Each Day Fighting in Region	Miltech × Health % / 2000	Cannot cause damage to armies through this region damage.
Non-Megafauna Army	Each Day Fighting Another Army in Region	(10 - Effective Miltech) / 50000 × (1 to 3)	Cannot cause damage to armies through this region damage.
Megafauna Army	Each Day Fighting Another Army in Region	(10 - Effective Miltech) / 500 × (1 to 3)	Cannot cause damage to armies through this region damage.
Revolution	Region is the Capital	0 to 0.5	None
	Region is not the Capital	0 to 0.25	None
SPOILERS INSIDE!   Alien Nation Overthrown	Region is the Capital	0 to 0.5	Cannot cause damage to armies through this region damage.
	Region is not the Capital	0 to 0.25	Cannot cause damage to armies through this region damage.
Bombardment of Armies	Each Kinetic Attack has 20% Chance	Attack Damage / 500000, capped at 0.001	None
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	Home Nation's Miltech / 10 × Army Health %	Automatically passes rolls against Boost, Mission Control, and Space Defense Facilities.
SPOILERS INSIDE!   Dominate Nation Mission	Normal Failure	0.4	Automatically passes rolls against Boost, Mission Control, and Space Defense Facilities.
	Critical Failure	0.9	Automatically passes rolls against Boost, Mission Control, and Space Defense Facilities.
SPOILERS INSIDE!   Terrorize Region Mission	None	0.01 to 0.07	None