Playground

Interactive experiments, simulations, and visual toys. Each one keeps the site navigation so you can jump back anytime.

Little Planet Worlds

A self-contained 3D adventure on a tiny living planet. Wander forests, villages, deserts and glaciers as Pineapple Monster or Explorer, gather, craft, build a home, and find passages to stranger worlds.

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COLLAPSE

Build a civilization, corrupt its institutions, and turn the wheel of history. A playable historical strategy campaign of cities, councils, divine powers, and the long arc from founding to fall.

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The Wheel of Empires: Anacyclosis Simulator

Polybius's seven-stage cycle of civilizations, as an interactive essay. Step or auto-play each regime, make dynastic choices in a generational saga, and read period newspapers as monarchies, republics, and mobs rise and fall.

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Helios: Solar Cycles & Extreme Events Explorer

Interactive chronology of solar cycles, Miyake events, and historic superflares. Explore Gleissberg, Suess, and Hallstatt oscillations alongside tree-ring radiocarbon spikes and polar ice-core records, with search, filters, and a navigable energy-scale timeline.

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Water Cycle Simulation

Closed hydrologic cycle across ocean, valleys, and mountains. Day/night temperature, orographic rainfall, evaporation, condensation, and downhill runoff with conserved water.

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Supply & Demand Economic Simulator

Comprehensive economic simulation showcasing market dynamics in a closed economy with 50 agents. Features real-time supply and demand curves, multiple economic scenarios (scarcity, abundance, tech boom, demand surge), market interventions (price floors/ceilings, taxes, subsidies), and a money printer mechanism. Watch producers, consumers, and traders interact through order books with detailed agent statistics, wealth inequality tracking, and exportable simulation data.

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Galton Box Physics Simulation

Interactive physics simulation of Sir Francis Galton's bean machine demonstrating the Central Limit Theorem. Features delta-time collisions, live binomial overlay, mean/σ comparison to theory, presets from ideal to chaotic, and adjustable gravity, bounce, geometry, and drop rate.

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Bitcoin Strategic Reserve - US States Progress

The current progress of the Bitcoin Strategic Reserve in the United States (as of May 7, 2025)

Bitcoin strategic reserve US states interactive infographic

Geo Economic Simulator - Claude 3.5 Sonnet

A simulation of a global economy over time, with a focus on the relationship between GDP, population, and resource availability.

Claude 3.5 Sonnet simulation economics data visualization

Social Security Scenario Simulator

Comprehensive Social Security benefits calculator with break-even analysis. Input your earnings history to see monthly benefits at different retirement ages (62-70), compare lifetime totals with COLA adjustments, and analyze investment scenarios. Features detailed year-by-year projections, visual break-even point detection, and CSV export for financial planning.

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Last Stack Standing - Money Printer Simulation

Monte Carlo table-stakes experiment: equal starting stacks, dice decide each round, and the last stack wins. Compare fair play with a money-printer that recapitalizes Player 1 using newly created chips. Sweep bailout counts to map win rate, inequality, wealth share, and inflation with confidence intervals.

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