The same algorithms that power Houdini, Blender and game engines — cloth on springs, SPH fluids, position-based fracture and volumetric fire — running live in your browser.
Open any simulation — runs instantly in your browser
Particles, fire, smoke, destruction, and cinematic physics — in WebGL
Visual effects simulations model the physical phenomena that VFX artists reproduce in film and games. Particle-system simulations emit sparks, embers, and debris from a point source with randomised initial velocity, gravity, drag, and life-span, producing fire, explosion, and magic effects through GPU-accelerated instanced rendering. SPH fluid simulations in a 3D box handle up to 50,000 particles at interactive frame rates, enabling dynamic water splashes and fluid destruction.
Smoke and volumetric-cloud simulations integrate Navier–Stokes' vorticity equations on a sparse voxel grid and render the resulting density field with ray-marching. Destruction simulations pre-fracture a rigid body into Voronoi cells and activate physics on impact, using impulse-based dynamics for the resulting debris. These are the same computational techniques underlying Houdini, Blender's MantaFlow, and Blizzard's physics-based destruction in games like Overwatch.
Each simulation in this category is built with accuracy and interactivity in mind. The underlying mathematical models are the same ones used in academic research and professional engineering — just made accessible through a web browser. Changing parameters in real time and observing the results is one of the most effective ways to build intuition for complex scientific and engineering concepts.
Topics and algorithms you'll explore in this category
Common questions about this simulation category