Simulations

A simulation of falling sand and so much more, a surprising amount of physics built into this toy. Created by the R74n Collective.

Have you ever wanted to walk backward into a black hole? Fly through a wormhole? Now’s your chance in this relativistic simulation. Based on the setup in the movie Interstellar, and created by sirXemic.

Have you ever wanted to evolve mold? Here, you can evolve mold. Recently updated! Created by ery tau.

Excellent web simulator for optics, with a wide range of lenses, mirrors, prisms, and other objects you can add. Created by Yi-Ting Tu.

Fun toy that lets you play with a Reaction Diffusion System, a simulation that easily makes interesting patterns and has a connection to how biological systems grow. Created by pmeila.

Very cool 3D astronomical simulations, running right in the browser. Created by Darrell Huffman.

Downloadable space simulation that lets you smash planets together in a really cool way. Created by Giant Army.

Evolving creature simulator where the creatures are basically 3D sets of boxes. Built by Evol Games.

A simulation of the spacetime around a Schwarzschild black hole where you can fling astroids and light to your heart’s content. Created by TestTubeGames.

Nice tool for easily creating and testing simple circuits, built by PhET.

A customizable toy of a double pendulum. Created by MinuteLabs.

An interactive book about geology and earth science, available for iPad and Mac. Created by Chaim Gingold.

A simulated swing, with some tools for exploring the physics behind pumping your legs. Created by TestTubeGames.

Draw the bones and muscles for your stick-figure creatures, and evolve them into better racers. Built by Keiwando.

Simulation for investigating waves and interference, with a bunch of customizable physics options. Created by Falstad.

An interactive video that lets you explore the math and patterns of virus structures. Created by Hamish Todd.

Investigate systems that interact, such as the predator-prey population dynamics and much, much more. Created by Nicky Case.

An explorable explanation of the orbits around a spinning black hole. Created by Dr. Leo Stein.

Basically lets you recreate The Game of Life, but with emoji and any rules you’d like to put in. Created by Nicky Case.

Electromagnetic wave simulation. Created by Falstad.

Particles bouncing around in a box, with lots of options for changing the setup. Includes thermodynamic quantities, too. Built by Falstad.

Crawling stick figure creatures evolve before your eyes. Created by TestTubeGames.

Easy-to-use simulator for modeling electric fields around point charges. Created by Ithaca College.

Web based oscilloscope, with a variety of settings to explore, among them the ability to use your microphone to input the wave pattern. Created by Neil Thapen.

What is a day, actually? Part video, part simulation, all interesting. Created by Jasper Palfree.

Cool phone app that can turn your device into a physics sensor, measuring things like sound, acceleration, light, etc. Created by Vieyra Software.

Some interesting simulations about how eyes work to see the world. Created by Ala’, Andrew, Jason, Peter, and Tanya.

See a globe of earth, but back in history, millions of years ago. Watch the techtonic plates move, and see where in Pangaea your house was.

Simple tool for exploring the night sky at different wavelengths of light. Built by Lowe, Simpson, and North.

Pixel based simulation of life, where each color represents a type of cell for the organism. Over time organisms evolve in their virtual environment. Created by Max Robinson.

Turn your phone into a physics lab. Graph things like acceleration, pressure, and magnetic field. Very powerful stuff. Created by RWTH Aachen University.

Basic and easy-to-use simulation for light curving around a black hole. Created by Thomas Müller.

Surprisingly powerful tool for creating circuits and seeing their behavior, created by Falstad.

A slick simulation of particles flying around a black hole. Created by Ricky Reusser.

Investigating molecules bouncing around in a piston in various states of matter. Good thermodynamics simulations by PhET.

Evolution simulator where little creatures swim around and evolve. A deep amount of complexity. Created by Léo Caussan.

Scroll down the page and explore what energies match what masses, according to the famous equation E=mc^2. Created by MinuteLabs.

A beautiful simulation of a fluid that’s quite fun to play with. Mesmorizing… Built by Pavel Dobryakov.

Simple lens simulation by MinuteLabs.

A to-scale model of the solar system in a browser window. Created by Josh Worth.

Fly through the universe near the speed of light, and experience the relativistic effects of length contraction and time dilation. Can you make it to Andromeda in one raptor’s lifetime? Built by TestTubeGames.

A look at the quantum mechanics behind Bell’s Inequality, using a casino as an example. Built as a long blog post with many interactives along the way. Created by Adam Becker.

An evolution simulator heavily based in biology, built by Revolutionary Game Studio.

Blog post about Entropy, full of interactive simulations. Written clearly and understandably, also with sheep. Created by Aatish Bhatia.

Simple light color mixing simulation, by Alex Larioza.

An interactive explorable about the physics behind gears. Created by Bartosz Ciechanowski.

Particle simulation that is great for exploring thermodynamics, or Newtonian mechanics, gas laws, etc. Created by Dan Schroeder.

Fascinating simulator that gives you a lot of power to change the rules of the world, adding in various forces, rules, and objects. Can create some interesting things. Built by lisyarus.

Simple simulation: draw an iceberg, and see how it will float in the water. Inspired by the idea that icebergs are often drawn incorrectly. Made by joshdata.

Fascinating simulation where you can add and move objects in 4 dimensions. On mobile or pc, and created by mtb design works.

Build tons of 2D physics simulations with this free resource. Easy to check out, tons of cool stuff you can do with it. Created by Dimitris Xanthopoulos.

Long blog post about the physics behind bicycles. Full of interactives, and very cleanly done. Covers an absurd amount of mechanics. Created by Bartosz Ciechanowski.