Treaty Compliance Simulator

Nation A — Your Delegation

Compliance level 50%

Enforcement Mechanism

Sanctions / trade penalties 20%

Scenario

Initial defector nations 3

Simulation speed 1.0×

Outcome

Avg. compliance

–

Carbon budget left

–

Projected warming

–

Years simulated

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Cooperating (>70%)

–

Free-riding (<30%)

–

Each of the 7 nations privately gains from cutting its own compliance (free-riding) while still benefiting from everyone else's cuts — the tragedy of the commons. Raise enforcement to make defection costly and pull the network toward cooperation.

High compliance Partial compliance Free-riding