Find great work. Meet the people behind it.

The Evolution of Trust

A playable explanation of why we trust each other, told through a deceptively simple game.

The Wisdom and/or Madness of Crowds

Draw connections between people to explore how ideas and behaviors spread through human networks.

To Build a Better Ballot

Move voters and candidates to compare how voting rules can produce different election outcomes.

The Magnificent 2D Matrix

Change matrix entries and watch vectors transform, connecting arithmetic with movement on a plane.

Adventures with Anxiety

An interactive story in which you play the anxiety. Contains mature language and themes.

LOOPY

A tool for thinking in systems: draw causal loops and simulate them.

Parable of the Polygons

A playable post on how harmless individual choices can make a harmful world (with Vi Hart).

AI Safety for Fleshy Humans

A whirlwind interactive tour of the core ideas of AI and AI safety.

Protecting Lives & Liberty: How Contact Tracing Can Foil COVID-19

A comic-style explainer of privacy-preserving contact-tracing apps.

Nutshell

A tiny tool for expandable explanations. Follow an idea without losing your place.

Infinite Craft

Combine elements and see where your curiosity takes you.

The Password Game

A password form with an increasingly unreasonable set of rules.

Draw a Perfect Circle

One simple challenge: how close can you get?

Portfolio devlogs

The portfolio website links to a video series documenting how the world was built.

Three.js Journey

A course about making things with Three.js.

The Digital Garden

A collection of visual essays, notes, and patterns that grows over time.

Interface Patterns

Observed patterns in how people use and make software.

But what is a neural network? | Deep learning chapter 1

Follow a visual introduction to neurons, layers, and weights through the problem of recognizing handwritten digits.

The essence of calculus

Watch area, small changes, and accumulation reveal the central idea behind calculus.

Linear transformations and matrices | Chapter 3, Essence of linear algebra

See matrices move a grid, and understand linear transformations as changes to space.

The last IMO problem AI could not solve

A longer olympiad-problem walk-through from 3Blue1Brown.

The Hairy Ball Theorem

Why you can never comb a hairy ball flat, and where the theorem shows up.

Laplace Transform: forced oscillators

The next video in the Laplace Transform sequence, applied to driven oscillators.

Reinventing Entropy | Compression is Intelligence Part 1

Rediscover Shannon entropy from scratch.

But what is cross-entropy? | Compression is Intelligence Part 2

How cross-entropy connects compression to training language models.

3Blue1Brown

Visual explanations that make mathematical ideas click.

Visual math lessons

Explore lessons across algebra, calculus, geometry, and more.

Minecraft — Volume Alpha

An album by C418. Listen on the artist’s Bandcamp.

Wanderstop

Explore C418’s Wanderstop soundtrack.

Introduction to A*

Learn a pathfinding algorithm by playing with its moving parts.

Hexagonal Grids

Manipulate hexagons to understand coordinates, neighbors, distances, rotations, and paths on a hexagonal grid.

Making Maps with Noise Functions

Tune noise layers to turn simple functions into terrain, islands, climate zones, and game worlds.

2D Visibility

Move a viewpoint around obstacles and inspect an algorithm for calculating visible areas and shadows.

Flow Field Pathfinding for Tower Defense

Interactive guide to breadth-first flow fields for moving many units toward a goal.

Line drawing on a grid

Interactive explanation of drawing lines on a grid with interpolation.

Mapgen4

Draw your own terrain with an interactive map generator.

Probability and Games: Damage Rolls

Interactive explanation of how dice-roll formulas shape damage distributions in games.

Curved Paths

Interactive explanation of building curved roads from circular arcs.

A Friendly Introduction to Spring Physics

An interactive tutorial on spring-based animation in JavaScript.

Interactive CSS articles

Explanations and hands-on examples of how the web works.

The Plane of Focus

Turn a lens's focus ring and aperture to see where an image becomes sharp.

Rocket Nozzle Lab

Change a rocket nozzle's throat, throttle, and surroundings to investigate how hot gas creates thrust.

River Bend Lab

Adjust water flow and sediment, then move through time as a river reshapes its valley.

Heart Pump Lab

Step through a heartbeat and change valve behavior to follow blood through two connected circuits.

Prism Room

Rotate a prism and aim its light beam to split, bend, and recombine a spectrum.

Prismatic // Optics Bench

Adjust dispersion to separate white light into colored paths, then replay the rays through prisms and lenses. On phones, open Optics for the full diagram.

Root Finder

Rotate a growing seed and change gravity to explore why roots and shoots choose different directions.

Pendulum Rhythm Lab

Change pendulum lengths, add a push, and discover when their rhythms fall into step.

Soap Bubble Lab — Build a Perfect Film

Shape soap films on wire frames and watch them find the smallest surface.

Who Gets the Green? — one intersection, adaptive signals

Run a live simulation of one city intersection and compare adaptive traffic-signal strategies.

What Happens When You Send a Prompt

Follow one real question through an AI model: hidden instructions, tokens, and generation in half a second.

How the Internet Works — the half-second after you press Enter

Ride one click through a miniature world of DNS, handshakes, packets and Wi-Fi.

Benchmark Mountain

Watch fourteen AI labs climb five benchmark peaks in a 3D landscape of model scores.

Set the Mood — a moodboard that builds the room

Drop wood, stone, fabric, paint, furniture and sunlight onto a moodboard and watch the room assemble.

Home internet from space: Starlink

Explore how a Starlink dish hands its connection from low-orbit satellites to laser relays, and compare the distance and latency of a geostationary link.

Window Draft Lab

Open or seal a window and move the radiator to follow warm and cold air currents in a 2D room-airflow simulation. Designed for a larger screen.

Hummingbird Wing Lab

Change wing twist and beat rate to see how an idealized hummingbird wing generates lift. Flow is schematic; use a larger screen for the full control layout.

Earthquake Tower

Change shake-table frequency, tower height and bracing to compare resonance in simplified elastic buildings.

Bike Brake Lab

Compare front lock, rear lock and ABS while changing speed and road grip in a simplified braking model.

Siphon Lab

Raise the outlet, prime the tube or admit air to explore flow and pressure in a siphon model.

Speaker Cone Lab

Scrub a waveform and change the signal and power to connect a speaker cone’s motion with pressure waves.

Compass Field Lab

Move a compass and arrange magnets to compare field direction, field lines and iron-filing patterns.

Change a Flat Tyre, Step by Step

Step through fitting a spare wheel, place the jack, and compare correct tightening with common mistakes.

Learn to Park, Step by Step

Explore parking manoeuvres with step controls, different viewpoints, and a practice mode.

Two Wheels, One Engine: a differential, cut open

Compare how a differential shares motion and torque during a turn, on ice, and with different locking mechanisms.

Roman Space Telescope, simulated

Explore Roman's journey to L2, gravitational lensing, planet detection, and its starlight-blocking coronagraph.

Inside the Raptor 3 rocket engine

Take apart a 3D rocket engine, follow oxygen and methane through the turbopumps, and adjust its throttle.

A star in a bottle

Open a fusion reactor, heat the plasma and watch it fuse in an interactive airsup lab.

The internet, physically

Follow a packet beneath the ocean, explore real submarine cable routes and network maps, and see how a cable cut changes the path.

Inside a 5-axis CNC machine

Watch how a five-axis machine cuts an aluminium impeller, and see how the spindle, tilting table, coolant and chips work together.

How chipmaking uses extreme ultraviolet light

Follow tin droplets, laser pulses and mirrors to see how extreme-ultraviolet light reaches a silicon wafer in a browser-built teaching model. Use the creator’s website link to try the interactive model (larger screen recommended).

A rocket engine printed from metal powder

Watch a powder layer spread, lasers fuse a rocket-engine cross section, and internal cooling channels emerge in a simulated metal 3D printer. Use the creator’s website link to try the interactive model (larger screen recommended).

Inside an aircraft factory

Explore a simulated aircraft production line and follow how parts and work move through a factory. This is a browser-built teaching model, not a real factory tour. Use the creator’s website link to try the interactive model (larger screen recommended).

Starship's flight as a machine on a desk

Watch a miniature Starship trace a flight path on a mechanical desk model, from liftoff through reentry. Open the creator’s website to scrub the timeline and switch between machine, follow, close-up and globe views (larger screen recommended). A teaching simulation with estimated recovery times, not footage or a verified prediction of an actual flight.

Moon

Move celestial bodies and scrub through time to connect lunar phases, orbital motion, tides, and eclipses.

Airfoil

Experiment with moving air and wing shapes to build an intuition for lift and flight.

Bicycle

Steer a rider and inspect the forces that let a bicycle accelerate, turn, brake, and carry weight.

Sound

Play tones and manipulate visual models to see how vibrations travel through air as sound.

Mechanical Watch

Take apart a watch in 3D and follow the springs, gears, and escapement that keep time.

Curves and Surfaces

Drag control points to discover how a small set of coordinates can describe smooth shapes.

Color Spaces

Explore color matching, gamuts, and the coordinate systems screens use to describe the colors we see.

GPS

Interactive article explaining how GPS works.

Naval Architecture

Interactive article explaining how ships float and maintain their stability.

Internal Combustion Engine

Interactive article explaining how an internal combustion engine works.

Cameras and Lenses

Interactive article explaining how cameras and lenses work.

Lights and Shadows

Interactive article explaining how lights and shadows behave.

Gears

Interactive article explaining how mechanical gears work.

Tesseract

Interactive article that visualizes a tesseract and the fourth dimension.

Earth and Sun

Interactive article about the motion of Earth around the Sun.

Exposing Floating Point

In-depth interactive explanation of the floating point format.

Drawing Bézier Curves

Drag control points and vary the curve parameter to explore the geometry behind Bézier curves.

Basic Probability

Experiment with coins, dice, and cards to build intuition for chance, expectation, and variance.

Probability Distributions

Define random variables, reshape distributions, and sample averages to explore the central limit theorem.

Bayesian Inference

Change probabilities and observations to see how evidence updates prior beliefs into posterior estimates.

Regression Analysis

Fit lines to data interactively and explore linear regression and correlation.

Compound Probability

Build sets in a Venn diagram, compare permutations and combinations, and explore conditional probability.

Frequentist Inference

Drop random samples to estimate pi, generate confidence intervals and explore bootstrap resampling.

Why Momentum Really Works

Explore how momentum changes optimization trajectories and why it can accelerate gradient descent.

How to Use t-SNE Effectively

Change datasets and parameters to discover what t-SNE plots reveal and where they can mislead.

A Visual Exploration of Gaussian Processes

Adjust distributions, kernels, and observations to see how Gaussian processes make predictions with uncertainty.

The history of the printing press

Watch a collage-style animated history of the printing press and the spread of printed information.

Induction heads in language models

Follow an animated token-by-token explanation of how induction heads can copy patterns in language models.

Steve Jobs: an animated life

Watch an illustrated timeline of Steve Jobs’s life and work, told through animated characters and typography.

How Shazam Works

See how Shazam recognizes a song from a short recording through an animated explanation of audio fingerprints.

How a watermill works

Watch water turn a wheel, gears transfer the motion, and millstones grind grain in this animated mechanism.

Ocean waves in 3D

Watch a real-time 3D water simulation explore rolling waves and the movement of the ocean surface.

How a jet engine works

Follow a 3D jet engine from intake to exhaust in a visual walkthrough of its internal components.

XVI · The X-Engine

Explore a rare X-16 engine architecture with four cylinder banks and sixteen pistons in 3D.

Black Hole Lensing Lab

Drag a black hole across the line of sight and watch background galaxies bend into arcs and Einstein rings.

Flight Lab — A study in flight

Explore how a wing creates lift and what changes with angle and speed in a hands-on wind tunnel.

Inside a File

Turn a dial to take a file apart, from the icon down to bytes and bits on disk.

How to Unclench

An interactive essay and field guide to the trainable skill of unclenching.

The Physical Stack Behind AI

Trace the AI compute stack from grid power and data centers to chips, racks and clusters.

Lie Theory: A Visual Introduction

An interactive visual introduction to Lie groups and optimisation on manifolds.

HOME RUN — The Home Loan Game

Play a home-ownership simulation and see whether you can pay off your bond early.

The Point — 3D Gaussian Splatting

An interactive explainer of 3D Gaussian splatting and how photos become navigable 3D scenes.

The watermark is a relationship

See how LLM text watermarks hide weak statistical signals across many tokens.

How Jev works: calibrated decision models

Explore how decision models return calibrated probabilities in milliseconds.

The Periodic Table of Elements

A planetarium-style interactive periodic table for exploring the elements.

THE CONSTRUCT — Bitcoin vs. The Quantum Machine

An infinite-zoom explorable down into the elliptic-curve math a quantum computer would attack.

Convex Explained

Interactive explainers that walk through building with Convex.

SeedSigner Dice → Seed Phrase Walkthrough

Step through how SeedSigner turns dice rolls into a seed phrase.

Five ways a cleaning robot ruins an office

An interactive explainer of the Concrete Problems in AI Safety paper: locate each accident in the pipeline.

New money is never neutral

Follow new money as it enters the economy and see why the order it reaches people matters.

Behind the Click — What happens after you press Enter?

An interactive explainer of what happens after you type a URL and press Enter.

Load Balancing

A bottom-up, animated guide to HTTP load balancing algorithms.

Memory Allocation

A visual introduction to memory allocation.

Hashing

A visual, interactive introduction to hash functions.

Bloom Filters

A visual, interactive guide to what bloom filters are and when to use them.

Turing Machines

An interactive introduction to Turing machines.

Big O

A visual introduction to big O notation.

Reservoir Sampling

Choosing fairly when you do not know how many items you are choosing from.

Markov Chains explained visually

Watch states hop around and tune transition probabilities to see how Markov chains behave.

Image Kernels explained visually

Apply kernels to an image pixel by pixel to see blur, sharpen and edge detection.

Eigenvectors and Eigenvalues explained visually

Drag vectors through a transformation to see which directions only stretch.

Principal Component Analysis explained visually

Rotate and project data to see how PCA finds the axes of greatest variance.

Conditional probability explained visually

Drop balls through shelves to build intuition for conditional probability.

Attention and Augmented Recurrent Neural Networks

A visual overview of neural attention and the extensions of recurrent neural networks (Chris Olah & Shan Carter).

Feature Visualization

How neural networks build up their understanding of images (Olah, Mordvintsev & Schubert).

A Gentle Introduction to Graph Neural Networks

Interactive tour of the components needed to build learning algorithms on graphs.

Activation Atlas

Explore millions of neural-network activations visualized with feature inversion.

Growing Neural Cellular Automata

Interact with differentiable cellular automata that grow and regenerate patterns.

Decision Trees

A visual introduction to decision trees, entropy and information gain.

Bias Variance Tradeoff

Learn the tradeoff between under- and over-fitting models.

Double Descent

A visual introduction to the double descent phenomenon in modern machine learning.

ROC and AUC

A visual explanation of ROC curves and AUC.

Circles Sines and Signals

A compact, interactive primer on digital signal processing.

Visualizing Algorithms

A visual essay animating sampling, shuffling, sorting and maze-generation algorithms.

Quantum computing for the very curious

An introduction to quantum computing in a mnemonic medium with embedded spaced-repetition review.

Build an Atom

Build an atom from protons, neutrons and electrons and see how element, charge and mass change.

Projectile Motion

Blast objects out of a cannon and explore how angle, speed and mass shape the trajectory.

Circuit Construction Kit: DC

Build circuits with batteries, resistors, bulbs and switches and measure current and voltage.

Are Pop Lyrics Getting More Repetitive?

Measure repetition in song lyrics over time using a compression algorithm.

Can Earth Run Out of Water?

An animated look at whether Earth can run out of water.

How ADHD Medication Works

An animated explainer of how ADHD medication acts in the brain.

Your Skeleton Is Electric

An animated explainer on the electrical side of your skeleton.

The Insane Real Engineering of the Nazi Enigma Machine

How the Enigma machine actually worked, and how it was broken.

The Scariest Chart In Engineering

A Veritasium explainer built around one alarming engineering chart.

Simulating the Evolution of Aging

Simulated blob populations show how aging can evolve.

Simulating the Evolution of Rock, Paper, Scissors

Simulations of how rock-paper-scissors dynamics play out in evolving populations.

Coding Adventure: Simulating Smoke

Build a smoke simulation from scratch, step by step.

Coding Adventure: Rendering Fluids

Explore techniques for rendering a simulated fluid.

How do microSD Cards Store 2 TB in such a TINY space?

3D-animated tour of the flash memory inside a microSD card.

Zooming Into a CPU

Zoom from a processor package down to its transistors.

How does a Spacesuit work? (NASA)

3D-animated breakdown of the systems inside a NASA spacesuit.

How Roller Coasters Actually Work

3D-animated explanation of roller coaster mechanics.

Strings Don't Vibrate The Way You Think

A minutephysics explanation of how strings really vibrate.

Why Are Some People Mosquito Magnets?

Why mosquitoes prefer some people over others.

Why are AI data centers using so much electricity?

A TED-Ed animated lesson by Sajan Saini on AI data-center power use.

Why magnets stumped scientists for so long

A TED-Ed animated lesson by Rachel Yang on the long puzzle of magnetism.

The "Perpetual Motion" Pump That Actually Works

Steve Mould explains a pump that seems to run forever.

The Anti Trampoline Effect

Steve Mould demonstrates and explains the anti-trampoline effect.

The Unreasonable Effectiveness of JPEG

A signal-processing walk-through of how JPEG compression works.

The Fast Fourier Transform (FFT): Most Ingenious Algorithm Ever?

An animated derivation of the Fast Fourier Transform.

How to Integrate with an AX? The Surprising Power of Planimeters

Mathologer visually explains how planimeters measure area.

Two black holes merge

Two black holes inspiral, chirp, merge and ring down into one spinning black hole.

The Permanent Echo of Gravity

How a passing gravitational wave leaves spacetime permanently displaced.

The Hugging Face sandbox incident, explained

A code-drawn explainer video of the incident where AI agents broke out of their sandbox.

The history of dinosaurs in under one minute

Every frame of this animated history of dinosaurs was drawn in JavaScript by Claude.

How the Rainbow Got Its Colors

A code-drawn animation about how rainbows form their colors.

The life of a fruit fly

A code-drawn animation of a fruit fly's life cycle.

Regularized Recursive Self Improvement of Agent Harnesses, in 3b1b style

An 8-minute 3Blue1Brown-style video summary generated from a research paper.

The Neocloud business, explained

A 4-minute AI-made explainer of the neocloud business, posted with a detailed generation workflow.

Object tracking explained in 3Blue1Brown style

The tracking loop, Kalman filters and association explained in 3Blue1Brown style.

RF-DETR explained

A narrated 3Blue1Brown-style explainer of the RF-DETR detector.

How nuclear energy works (generative video classroom)

Demo of a generative video classroom that produces animated explainers on demand.

Foveated Diffusion paper teaser

A 3Blue1Brown-style teaser video for the Foveated Diffusion paper, generated from the PDF.

Runway world models, a documentary

A one-shot, five-minute Netflix-style documentary with 3Blue1Brown-style animations.

What happens inside your body when your heart stops

An 8-minute 3D animated journey through cardiac arrest and CPR.

The Physics of Database Speed

A 19-minute animated explainer from 300 to 1M transactions per second, produced over three months.

How DeepSeek keeps 890 bytes of KV cache per token

A 7-minute Manim-style explainer of DeepSeek KV-cache compression.

The jumping frog puzzle

An AI-built animated explainer of the jumping frog puzzle.

How LLMs work, 3b1b style

A 3Blue1Brown-style explainer of how LLMs work, using numbers from real models.

The Xerox Alto

A Claude-made explainer video about the Xerox Alto.

Variational autoencoders, explained

A 5-minute 3Blue1Brown-style video on VAEs with Manim and models trained on MNIST.

How Qin unified China

A 45-second Vox-style history explainer on the Qin unification.

Oval Office

A text-described set becomes a Blender location model, rendered with Cycles on Higgsfield’s infrastructure.

Tools: Blender, Cycles, Higgsfield

A 109-minute physics lecture as a 2-minute explainer

GPT-6 Astra condenses a long physics lecture into a two-minute visual explainer.

The physics of flight

An AI-generated visual explainer of how flight works.

Racing car aerodynamics

An AI-generated explainer of racing-car aerodynamics.

REDLINE

A DOOM-inspired shooter with expanding levels, enemies, and combat, shown in the creator’s gameplay video.

T cells, explained

A ~5-minute educational video on T cells, generated from a single prompt by an immunologist who has studied T cells for decades.

James Webb launch and unfolding, rendered in code

A 4K film of JWST's launch and deployment where every frame is computed by code, with real mission timings.

Limits Explained Visually

A complete visual calculus lesson on limits using Manim animations.