Welcome to Marginal Falls

Module 01

The Mayor's Dilemma

Begin in Marginal Falls by choosing policy incentives and watching how citizens respond when the rules change.

Incentives Rationality Unintended Effects

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Module 01

Riverside Choice

Allocate scarce riverfront land between parks and apartments while weighing trade-offs at the margin.

Scarcity Trade-offs Marginal Analysis

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Module 02

Port Ledger Game · Marginal Falls Offers

Choose production plans and trade offers to discover why comparative advantage creates gains from trade.

Comparative Advantage Opportunity Cost Gains from Trade

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Module 03

Murder Mystery Investigation

Hire investigators and narrow the crime window while observing diminishing marginal returns.

Diminishing Returns Marginal Benefit Marginal Cost

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Module 04

Operation Contingency Plan

Build the strongest investigation plan under a fixed budget by comparing marginal conviction gains.

Budget Constraint Optimal Bundle Marginal Utility

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Module 04

Operation Contingency Plan · Demand Desk

Choose investigation bundles under changing forensic prices and see how optimal choices shift when prices change.

Demand Prices Substitution

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Module 05

Elasticity Jar Sort

Sort Marginal Falls goods into elastic and inelastic demand jars by reasoning through substitutes, urgency, and time.

Elasticity Substitutes Buyer Sensitivity

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Module 06

Block Party Cost Simulation

Plan the town block party and watch how total output, marginal product, and costs move as the class scales up.

Production Costs Diminishing Returns

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Module 07

Pro Party Planner

Choose the profit-maximizing quantity for a fundraiser when the market price is given and cost curves matter.

Profit Maximization MR = MC Cost Curves

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Module 09

Founders' Night Exchange

Trade pastry ingredients through class markets and discover how prices coordinate buyers and sellers.

Markets Equilibrium Exchange

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Module 10

The Berry Vault

Use reservation values and market prices to measure consumer surplus and producer surplus in the town bank.

Consumer Surplus Producer Surplus Welfare

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Module 11

The Chimney Switch

Decide whether bakeries should install cleaner chimneys when private costs and social costs diverge.

Externalities Social Cost Policy

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Module 12

Price Posting Market

Open a storefront, post prices across rounds, and watch competitive pressure push prices toward the market outcome.

Perfect Competition Price Taking Convergence

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Module 13

Mayor vs. Monopoly

Compare competition with monopoly power and decide how the mayor should regulate a natural monopoly.

Monopoly Market Power Regulation

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Module 14

The Starlight Shuttle War

Enter the corporate district, choose shuttle fares against a rival, and identify the Nash outcome in a price game.

Oligopoly Game Theory Nash Equilibrium

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