Mechanics

Mechanics are compact causal models, not Civilopedia rewrites. Browse by primary system or use mechanism-kind tags to compare structures across systems.

Place and Resources

• Settlement and Site Selection — specialization-portfolio, prerequisite-path-dependence
• Terrain Affordances — bottleneck-capacity, specialization-portfolio
• Water Access and River Siting — bottleneck-capacity, prerequisite-path-dependence
• Resource Distribution and Extraction — accumulation-depletion, conversion-exchange, bottleneck-capacity
• Land Improvement and Spatial Conversion — conversion-exchange, specialization-portfolio, adjacency-clustering

Cities and Population

• Food Surplus and Population Growth — accumulation-depletion, positive-feedback, bottleneck-capacity
• Housing and Carrying Capacity — threshold-phase-change, bottleneck-capacity, negative-feedback
• Citizens and Specialization — conversion-exchange, specialization-portfolio
• Amenities and Contentment — threshold-phase-change, legitimacy-compliance-defection, negative-feedback
• Appeal and Neighborhood Development — adjacency-clustering, conversion-exchange

Production and Infrastructure

• Construction and Opportunity Cost — conversion-exchange, specialization-portfolio, prerequisite-path-dependence
• Districts and Urban Specialization — specialization-portfolio, adjacency-clustering, prerequisite-path-dependence
• Adjacency and Clustering — adjacency-clustering, positive-feedback
• Wonders and Concentrated Investment — specialization-portfolio, contest-bargaining-coalition, prerequisite-path-dependence
• Power and Electrification — conversion-exchange, maintenance-carrying-cost, externality-collective-action

Knowledge and Adaptation

• Science as Accumulated Capacity — accumulation-depletion, conversion-exchange, positive-feedback
• Eurekas and Action-Linked Learning — conversion-exchange, prerequisite-path-dependence, positive-feedback
• Technology Trees and Prerequisites — prerequisite-path-dependence, bottleneck-capacity
• Culture and Civic Capacity — accumulation-depletion, conversion-exchange, prerequisite-path-dependence
• Inspirations and Institutional Learning — conversion-exchange, prerequisite-path-dependence, positive-feedback

Governance and Legitimacy

• Government Forms and Policy Slots — specialization-portfolio, bottleneck-capacity
• Policy Acquisition and Reconfiguration — specialization-portfolio, prerequisite-path-dependence, shock-recovery-adaptation
• Governors and Administrative Specialization — specialization-portfolio, prerequisite-path-dependence, legitimacy-compliance-defection
• Loyalty Pressure and Defection — threshold-phase-change, network-diffusion, legitimacy-compliance-defection

Religion and Culture

• Faith Accumulation and Sacred Investment — accumulation-depletion, conversion-exchange, specialization-portfolio
• Religion Founding and Belief Portfolios — specialization-portfolio, contest-bargaining-coalition, prerequisite-path-dependence
• Religious Pressure and Diffusion — network-diffusion, positive-feedback, contest-bargaining-coalition
• Cultural Influence and Tourism — network-diffusion, accumulation-depletion, information-uncertainty

Trade and Networks

• Gold, Liquidity, and Purchasing — accumulation-depletion, conversion-exchange, shock-recovery-adaptation
• Bankruptcy and Maintenance Burden — maintenance-carrying-cost, threshold-phase-change, negative-feedback
• Trade Route Capacity and Yields — conversion-exchange, network-diffusion, specialization-portfolio
• Trade Range and Trading Posts — network-diffusion, prerequisite-path-dependence, positive-feedback
• Envoys, Suzerainty, and Network Power — network-diffusion, threshold-phase-change, contest-bargaining-coalition

Conflict and Security

• Combat Strength and Force Conversion — conversion-exchange, contest-bargaining-coalition, information-uncertainty
• Movement, Terrain, and Logistics — bottleneck-capacity, prerequisite-path-dependence, maintenance-carrying-cost
• Zones of Control and Line of Sight — information-uncertainty, adjacency-clustering, bottleneck-capacity
• Experience, Promotions, and Formations — prerequisite-path-dependence, specialization-portfolio, positive-feedback
• War Weariness and Occupation — maintenance-carrying-cost, legitimacy-compliance-defection, negative-feedback

Diplomacy and International Order

• Diplomatic Relationships and Agendas — contest-bargaining-coalition, information-uncertainty, legitimacy-compliance-defection
• Visibility, Gossip, and Espionage — information-uncertainty, network-diffusion, contest-bargaining-coalition
• Agreements, Borders, and Joint Action — contest-bargaining-coalition, network-diffusion, legitimacy-compliance-defection
• Grievances, Casus Belli, and Reputation — accumulation-depletion, legitimacy-compliance-defection, contest-bargaining-coalition
• Alliances, Emergencies, and World Congress — contest-bargaining-coalition, externality-collective-action, threshold-phase-change

Ecology, Energy, and Long-Run Change

• Historic Moments and Era Score — accumulation-depletion, threshold-phase-change, information-uncertainty
• Golden and Dark Ages with Dedications — threshold-phase-change, shock-recovery-adaptation, positive-feedback
• Environmental Hazards and Disaster Exposure — shock-recovery-adaptation, externality-collective-action, adjacency-clustering
• Carbon Accumulation and Global Temperature — accumulation-depletion, threshold-phase-change, externality-collective-action
• Mitigation, Adaptation, and Resilience — shock-recovery-adaptation, externality-collective-action, specialization-portfolio