Carbon Accumulation and Global Temperature
Rule in the game
Game rule
Carbon emissions from fuel use and other activities accumulate globally. Rising atmospheric concentration advances temperature stages that intensify disasters and raise seas, so local energy decisions contribute to a shared planetary state.
This dossier treats that rule as a deliberately small model. It describes what the standard Gathering Storm rules make causally important without importing the Civilopedia’s historical-context prose or treating game balance as evidence about history.
Model
Inputs: emissions from power and activity, the global carbon stock, and each actor’s energy demand.
Process: distributed local flows accumulate into a common stock that crosses climate thresholds.
Outputs: temperature stages, stronger environmental effects, sea-level rise, and global exposure.
The useful unit of analysis is the conversion chain rather than any isolated number. An input can be abundant while the process that makes it usable is missing; an output can be impressive while its recurring supports are fragile. Reading the mechanic in this order also separates enabling conditions from the visible result the interface rewards.
Conditions
The stock aggregates emissions regardless of origin, while damages depend on geography and protection. Individual actors receive immediate energy benefits but bear only part of the later global cost.
These conditions define the mechanic’s boundary. They identify prerequisites, timing, position, and capacity that must be present before the modeled conversion works. They also show why copying the output without its supporting system is unlikely to reproduce the same result.
Feedback
Industrial capacity increases energy use and emissions, which damage infrastructure and demand more rebuilding. Once carbon accumulates, later restraint cannot instantly restore the prior state, creating temporal asymmetry.
The mechanism kinds recorded in frontmatter name the dominant behavior: accumulation-depletion, threshold-phase-change, externality-collective-action. These labels make it possible to compare structurally similar dynamics across otherwise different game systems.
Strategic tension
Each actor gains from cheap energy and prefers others to restrain emissions; collective stability requires coordination whose benefits are delayed and unevenly distributed.
The tension matters because neither side is simply an error. A robust strategy must decide which risk is tolerable, what horizon matters, and which complementary capacities can compensate for the chosen sacrifice.
System connections
This dossier belongs to Ecology, Energy, and Long-Run Change, Production and Infrastructure. Its upstream inputs are supplied by other mechanics in those maps, while its outputs become conditions for later growth, coordination, exchange, conflict, or adaptation. Following those links is more informative than treating the dossier as a self-contained encyclopedia entry.
Cross-system placement is intentional. The same game rule can be an output in one map and a constraint in another; the Rulebook records both roles so causal chains remain visible across editorial categories.
Analytical translation
Analytical translation
Stock pollutants create a collective-action problem across space and time. Local optimization is rational within a narrow boundary while producing a globally inferior trajectory.
This translation is a research prompt, not a historical conclusion. It suggests variables and relationships to investigate: who controls the inputs, which institution performs the conversion, where thresholds sit, who receives the output, who bears maintenance or external costs, and how alternatives change the balance of power.
Any later historical case must independently establish those facts. Resemblance to the game’s interface is never enough; a case may support the translation, narrow its scope, expose an omitted mechanism, or reject it.
Limits of the analogy
Limit
Climate response is represented by a short, known ladder. Real earth systems contain uncertainty, regional variation, tipping risks, feedbacks, justice claims, political economy, and harms not commensurable with game yields.
Three general distortions also apply. First, the player has centralized objectives and unusually broad information. Second, turns compress time and make many changes discrete, synchronized, and measurable. Third, game entities obey stable rules, while real actors interpret rules, bargain over them, and change them. Numerical tuning establishes a strategic trade-off inside the simulation; it does not establish the magnitude or even the existence of an equivalent historical effect.
Derived rules
- Thresholds Conceal Nonlinear Fragility — Thresholds conceal nonlinear fragility behind stable averages.
- Local Gains Can Create System-Wide Costs — Local optimization can create system-wide externalities.
Sources
The facts in Rule in the game are original paraphrases of these Civilopedia pages. The links are evidence for the game mechanic only, not for historical claims.
civ6-gs:concepts/global_temperature— Global Temperatureciv6-gs:concepts/power— Power