Big Country Economy Rework
Problem: In vanilla Terra Invicta, unifying nations dramatically reduces global Investment Points (IP) due to nonlinear GDP scaling and population smoothing. This creates several distortions:
– A unified Earth is weaker than a fractured one
– “Fixed” priorities (Mission Control, Military, Welfare, etc.) collapse in effectiveness as the size of nations grows
– Large, rich countries are penalized simply for existing
– Economic scale is treated as a balance problem rather than a source of power
The result: the game discourages unification and rewards micromanaging small states, contradicting both real-world economics and the fantasy of planetary governance.
Solution: This mod replaces Terra Invicta’s smoothed power curves with a linear, GDP-based economy model:
– Investment Points scale directly with GDP, 1 IP ≈ $12.5B/month ($150B/year)
– Per-IP effects scale inversely with population, so the same investment has more impact in smaller populations and less in larger ones
Overall, this eliminates artificial suppression of large nations, and prevents microstate exploitation. (However, a small-state floor prevents “0.1 IP” dead nations without restoring microstate dominance)
This doesn’t make the nations balanced. That’s OK. The real world is not balanced either.
You don’t play on a level field.
You play on Earth.
Key Changes (Current Version):
Economy Priority (v1.8.x) Linear GDP → IP scaling, economy returns calibrated to real ICOR ranges, returns depend on GDP per capita (investment saturation), Education (human capital), Democracy (institutional effectiveness), and Core & Resource regions (industrial and material base).
Population Scaling: Removed (pop / 50M)^-0.35 smoothing everywhere, and replaced with pure inverse scaling: 50,000,000 / population, to match the near-linear GDP to IP scaling.
Inequality (v1.7.3): Nation mergers now compute inequality using a GDP- and population-weighted model; merging rich and poor regions meaningfully increases inequality, without arbitrary inequality bonuses for colonies or resources.
Military Priority (v1.8.0): Preserves vanilla catch-up mechanics, adds a soft throughput dampener for very large economies, which prevents late-game Miltech runaway without hard caps.
Spoils Priority (v1.8.1): Reworked to scale with GDP per capita, not IP throughput, and strongly gated by Democracy. This prevents superlinear cash exploits under linear IP scaling.
Documentation: Full economic methodology, formulas, and modeling rationale are included in the README inside the mod folder.
Installation
– Install via Steam Workshop
– Install Unity Mod Manager: https://www.nexusmods.com/site/mods/21/
– Use DoorstopProxy
– Point UMM at your Terra Invicta install
– Verify mod loads via Ctrl + F10
Revisions:
Old revisions of this mod are available below. Click the link to download.
