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Evacuation SimulationSocial Force Model for crowd dynamics. Agents navigate corridors and exits under panic.… Traffic SimulationNagel-Schreckenberg cellular automaton for multi-lane highway traffic. Watch phantom jams,… Game TheoryEvolutionary Prisoner's Dilemma on a spatial grid. Strategies ALL-D, ALL-C, TFT, Grim… Disease Spread (SEIR)Spatial SEIR model with 4 agent states: Susceptible, Exposed, Infectious, Recovered. Click… Epidemic DynamicsPopulyarParticle-based SEIR epidemic model. Adjust transmission rate β, recovery rate γ, vaccination… Schelling SegregationAgent-based model showing how mild individual preferences create large-scale social… Opinion DynamicsDeffuant bounded-confidence model: agents update opinions only when close enough. Watch echo… Income Inequality SimulatorBoltzmann-Pareto exchange model: agents exchange random fractions of wealth, spontaneously… Voter Model & Schelling SegregationClassical voter model on a 2D lattice: agents copy a random neighbour's opinion. Three… Financial MarketAgent-based financial market with fundamentalists, trend followers and noise traders.… Labor Market DynamicsTune vacancy posting, job separation and matching efficiency to see unemployment settle and… Queueing TheoryNewAn M/M/c queue with Poisson arrivals and exponential service. Watch the line form and… Population PyramidNewAn age-sex pyramid projected forward with a cohort-component model — births from fertility,… Traffic Jams (NaSch)NewThe Nagel–Schreckenberg cellular automaton on a ring: accelerate, brake to gap, randomize,… Pedestrian CrowdsNewHelbing's social-force model in action: desired velocity, exponential repulsion and walls… Axelrod's TournamentNewRobert Axelrod's 1980 round-robin: 10 IPD strategies — All-D, All-C, TFT, TF2T, Generous… LWR Traffic Flow — Kinematic Waves & ShockwavesNewThe Lighthill-Whitham-Richards PDE models macroscopic traffic flow: density waves travel… Prisoner's Dilemma — Cooperation & Evolution of TrustNewTwo players each gain by defecting, yet both do worse if both defect. Iterate the game on a… Social Influence CascadeNewLinear Threshold Model (Granovetter): each node adopts a behavior when fraction of neighbors… Innovation Diffusion — Bass ModelNewBass diffusion model: dN/dt = (p + q·N/M)·(M−N). Innovators (p) and imitators (q) drive… Rumor Spread — Ignorant/Spreader/Stifler ModelNewAdjust contact rate and stifling probability to watch a rumor spread through a network,… Happiness & Similar NeighboursNewInteractive happiness-threshold cellular automaton: agents relocate when fewer than k of… Language Change — Word Variant DiffusionNewWatch a new word variant spread through a network as agents copy their neighbours' majority… Tragedy of the Commons — Shared Resource DepletionNewA shared resource pool regrows logistically while cooperators and free-riders harvest it.… Auction Simulator — English, Dutch & Vickrey AuctionsNewRun English, Dutch and Vickrey auctions with simulated bidders holding private valuations,… Information Cascades & Herding — Bayesian Sequential ChoiceNewAgents combine a private noisy signal with predecessors' public choices, sometimes ignoring… Network Formation — Preferential AttachmentNewWatch a scale-free network grow under Barabási-Albert preferential attachment: new nodes… Six Degrees of Separation — Small-World NetworksNewInteractive Watts-Strogatz small-world network simulation. Rewire a ring lattice with… Crime Hotspots — Self-Exciting Point ProcessNewEach crime incident temporarily raises risk nearby in this self-exciting Hawkes process —… Migration & Gravity Model — Interregional FlowsNewInteractive gravity model of migration. Watch animated migrant flow particles travel between… Ultimatum Game & Fairness — Evolving OffersNewWatch offer and minimum-acceptable strategies evolve across generations in a repeated… Median Voter Theorem — Spatial CompetitionNewInteractive Median Voter Theorem simulation: watch political candidates on a 1D policy… Gerrymandering Simulator — Packing & Cracking DistrictsNewRedraw district boundaries on a grid of red and blue precincts and watch packing and… Bank Runs & Financial Contagion — Interbank Network SimulatorNewShock a bank's assets and watch default risk cascade through an interbank lending network;… Congestion Pricing — Wardrop EquilibriumNewDrivers choose between a free congested route and a faster tolled one, settling into a… Social Mobility — Markov Chain Income QuintilesNewAdjust the transition matrix's stickiness and watch a population of five income quintiles… Urban Gentrification — Rent, Migration & DisplacementNewGrid-city simulation of gentrification. Affluent in-migration raises local rent through… Filter Bubbles — Recommender-Biased Opinion DynamicsNewAgents update opinions through bounded-confidence dynamics while a biased recommender limits… Crowdfunding Dynamics — Bandwagon Backer ModelNewBackers pledge based on a campaign's visible progress toward its goal — tune the funding…