Mini Games

balance & body physics (12)

pendulums, tightropes, unicycles - keeping things upright

Tightrope Balance Guide a tightrope walker across a high wire using subtle tilts to counterbalance gravity and wind - inverted pendulum physics with ragdoll falls
Balancing Broom Keep a broom balanced on your palm using mouse or keyboard - inverted pendulum physics with wind gusts, random nudges, and ramping difficulty
Balancing Pole Slide a base to keep one or more poles balanced upright - inverted pendulum physics with wind perturbations and trail visualization
Stilt Walker Balance and walk on independently controlled stilts over uneven terrain - alternate stilt steps with Q/W and O/P while leaning to keep your inverted-pendulum body upright
Unicycle Balancer Control pedaling and leaning independently to ride a unicycle across terrain - inverted pendulum physics with gyroscopic wheel stabilization
Unicycle Juggler Balance a unicyclist while juggling balls - manage inverted pendulum physics and rhythmic tosses simultaneously in this multitask challenge
Cat Landing Simulator Twist a falling cat mid-air to land on its feet - control body curls and tail swing to exploit angular momentum conservation and the righting reflex
Swing Set Stunt Pump a swing with rhythmic leans to gain height, then launch at the perfect moment for maximum distance - pendulum physics with ragdoll landings
The Drunken Waiter Balance a tray of wine while walking - compensate for sloshing SPH fluid shifting your center of mass
Gyroscope Balancer Spin a virtual gyroscope and tilt the base to see precession, nutation, and wobble - add loads, adjust gravity, and watch angular momentum in action
Chaos Pendulum Double or triple pendulum simulator with chaotic motion traces - set initial angles and watch sensitive dependence on initial conditions create beautiful pattern art
The Human Tower Collaborative ragdoll stacking - build a castell by stacking humans on each other's shoulders while managing muscle fatigue and structural buckling

creature & robot control (8)

multi-limbed locomotion, QWOP-style body coordination

Suction Cup Climber Attach and detach suction-cup limbs to inch up a glass wall - per-limb grip control with fatigue, wind, slippery patches, and ragdoll falls on failure
Sticky Hand Climber Drag and fling stretchy limbs to find holds and haul a squishy jelly body up an endless vertical wall
Quadruped Locomotion Control front and back leg groups to make a four-legged creature walk, trot, and gallop across terrain with full body joint constraints
Spider Leg Controller QWOP-style arachnid locomotion - control each of eight spider legs independently to walk, stumble, and fall
Snake Segment Slider Coordinate body wave timing to slither a segmented snake across terrain - manual joint sliders or auto serpentine, sidewind, concertina, and inchworm gaits
The Soft Robot Walker Pneumatic silicone robot locomotion - inflate limbs with QWER keys and crawl using friction anisotropy from scales
The Oobleck Run QWOP-like rhythm game on non-Newtonian fluid - keep stomping or sink into the cornstarch!
Neural Network Creature Tune a feedforward neural network to control a creature - adjust weights to make it seek food, avoid walls, and survive

flight & vehicles (5)

things that fly, fall, and steer through the air

Parachute Steering Challenge Steer a parachute for a controlled descent - adjust left and right toggles to guide a skydiver's canopy through wind fields and aim for a gentle landing on the target
Hang Glider Simulator Launch from a cliff and soar through thermals - tilt to steer, find rising air columns, and stay aloft as long as possible with lift, drag, and variometer physics
Crane Operator Challenge Operate boom rotation, trolley, and winch separately to move loads while managing pendulum sway and wind
Paper Airplane Designer Design, fold, and throw paper airplanes - tweak wingspan, sweep, dihedral, nose weight, and trim to maximize distance or perform stunts with approximate aerodynamic physics
Wind Tunnel Simulator Place shapes in a virtual wind tunnel and observe airflow visualization with smoke lines, pressure fields, streamlines, and drag force indicators

fluids & particles (13)

liquids, sand, clouds, and things that flow, splash, and scatter

The Ferrofluid Dancer Simulation of ferromagnetic fluid manipulated by magnets - watch the fluid dance and form crystalline spikes
The Mercury Maze Tilt the board to guide liquid mercury through mazes - shatter and coalesce droplets to reach the exit
The Lava Lamp Designer Thermal convection simulator - tune heat and cooling to achieve the perfect hypnotic bloop frequency
The Wet Soap Grip simulator - hold slippery soap in the shower as lather builds and dynamic friction drops. The tighter you squeeze, the faster it shoots out
Water Hose & Breakables Spray a high-pressure water jet at stacks, walls, and sculptures made of clay, stone, glass, and wood - erode soft materials and topple rigid-body structures with fluid force
Ball Pit Simulator Fill a pit with hundreds of colorful balls, then launch heavy balls, bowling balls, and bombs into them to watch chaotic scattering with spatial-hash collision physics
Colliding Balls Box Spawn bouncy balls, adjust gravity and elasticity, and watch collisions, swarms, and cascades in a box with tunable restitution, trails, and slow motion
Cloud Sculpting Toy Pinch, pull, and smooth a fluffy volumetric cloud - build up density until it darkens and rains, with wind drift and sun-driven evaporation
Balloon Inflation & Pop Pump air into stretchy balloons and watch them expand, wobble, and burst - manage pressure, elasticity, and thickness to avoid popping
The Hourglass Filler Granular physics toy - design vessel shapes and calibrate sand flow to measure exactly one minute, fighting jamming and arching
Particle Fountain Art Place emitters, obstacles, and attractors to compose flowing particle fountains and sand streams - a kinetic art canvas with glow, trails, and gravity
The Avalanche Patrol Snow physics simulator - ski down slopes, probe for weak layers, and place explosives to trigger controlled slab avalanches
Fireworks Show Designer Place fireworks on a night sky, set their timing on the timeline, then sit back and watch your custom show explode with procedural particle effects

life & ecosystems (14)

biology, plants, fungi, evolution, and living systems

The Slime Mold City Bio-computation toy using Physarum polycephalum algorithms to solve urban transport networks
Slime Mold Network Place food and obstacles for a Physarum-inspired slime mold - watch it search, optimize, and prune paths in a glowing petri dish
The Root Bound Underground root architecture puzzle - guide root tips around rocks while your tail lignifies behind you
The Moss Terrarium Voxel ecosystem sim in a glass jar - manage the water cycle and grow competing moss species
The Mycelium Web Reverse-dungeon crawler - spread fungal hyphae through wooden structures and decompose them back to soil
The Ivy Climber Procedural vine simulator with phototropism and thigmotropism - watch vines seek light and climb supports
The Coral Reef Builder Calcium carbonate deposition simulator - place polyps, adjust currents and light, balance top-heavy growth against breakage
The Wild Garden Grower Scatter seeds and tweak rain and sun to grow a wild meadow - watch plants compete for light and soil moisture while insects visit the flowers
Bonsai Tree Sculpting Prune branches and wait for regrowth to sculpt a living bonsai - adjust sunlight, wind, and season with botanical branching rules
Predator Prey Ecosystem Spawn herbivores, predators, and plants on a grassy field - watch Lotka-Volterra population cycles and food chain dynamics emerge from simple rules
Evolution Creature Lab Spawn creatures with genetic traits, watch them compete for food and evade predators, and observe locomotion strategies emerge over generations via natural selection
Microbial Petri Dish Drop microbes and nutrients into a petri dish - watch colorful colonies grow, compete for resources, and respond to antibiotics, heat, and UV light
Plant Breeding Garden Cross-pollinate flowers and breed new varieties - select parents, combine genetic traits for petal shape, color, and pattern, and watch offspring grow with mutations
The Ant Lion Trap Predator-prey physics toy - dig conical pits in sand at the critical angle of repose to trap wandering ants with avalanches

structures & machines (10)

building, engineering, mechanisms, and destruction

The Tensegrity Architect Build impossible-looking floating structures using tensional integrity - connect rigid bars with flexible cables
The Spider Web Engineer Orb weaver simulator - shoot silk to build frame, radii and capture spiral, then withstand wind and catch insects
The Puppet Rigger Marionette physics toy - control the airplane cross-brace to make your puppet walk using inverse dynamics and pendulum momentum
The Marionette Surgeon Control surgical hands via marionette strings - extract splinters, remove bullets, and stitch wounds with pendulum physics
Mechanical Linkage Workshop Connect rods, pivots, gears, and motors to design mechanisms, walkers, and moving sculptures with constraint-based physics and blueprint-style rendering
Bridge & Beam Sandbox Build structures with beams, joints, and supports then stress test them with loads and earthquakes - watch beams deform under strain and snap when overloaded
The Compliant Switch Design toy for compliant mechanisms - create bistable snapping structures using flexible beams with FEA-inspired stress visualization
Balloon & Weight Contraption Tie balloons and weights into floating rigs - find stable hovering combinations by balancing buoyancy and mass with strings, wind, and gravity
The Hydraulic Press Destruction toy with plastic deformation - crush objects with a hydraulic press and watch them flatten, crack, and explode
Crash Test Playground Send vehicles and ragdoll dummies through crash courses with breakable obstacles, slow-motion replay, and 4 course presets

waves, sound & music (9)

acoustics, vibrations, cymatics, and generative music

The Chladni Plate Cymatics toy - bow a metal plate covered in sand and watch geometric patterns form at the nodal lines of standing waves
The Interferometer Wave physics puzzle - place emitters in a ripple tank and create quiet zones via destructive interference
The Doppler City Traffic soundscape toy - design roads and place buildings to shape a city's acoustic landscape with Doppler effect, reflections, and noise barriers
Sound Wave Sandbox Place speakers, walls, and a listener to visualize wave propagation, interference, and reflection in a top-down acoustic field
Wind Chime Simulator Arrange virtual chimes of different materials and control wind to create generative chime music as they collide
Rhythm Echo Tap beats to spawn bouncing echo balls that produce pitched sounds on every bounce, creating polyrhythmic patterns as they settle into faster subdivisions
Melody Droplets Drop balls onto pitched bars and let gravity compose - bouncing balls trigger notes on collision in this physics-powered melodic playground
Bouncing Sequencer Release balls into a pinball-like table of bumpers and pads to create rhythmic drum loops from repeating bounces with reactive lights
Generative Music Garden Place bouncing, orbiting, and drifting musical nodes that emit notes on collision - compose generative music through physics with scales, reverb, and presets

light & optics (4)

refraction, shadows, caustics, and visual perception

The Prism Garden Light refraction toy - place glass prisms, lenses, and blocks to split white light into spectral rainbows using Snell's law and chromatic dispersion
The Caustic Pool Water light toy - disturb a pool surface and watch refracted sunlight cast focused caustic patterns on the floor below
The Shadow Caster 3D-to-2D projection puzzle - rotate an amorphous blob to cast a specific shadow shape on the wall
Optical Illusion Workshop Tweak parameters of 11 classic optical illusions - Mueller-Lyer, Ebbinghaus, Cafe Wall, Hermann Grid, Ponzo, and more perception hacks with interactive controls

gravity & space (4)

orbits, galaxies, impacts, and force fields

The Galaxy Formation Sandbox N-body gravity sandbox - place stars, gas clouds, and black holes, fling them into orbit, and watch tiny galaxies swirl, collide, and merge
Orbital Gravity Sandbox Place celestial bodies and flick them into orbit - N-body gravity with Keplerian orbit visualization, trajectory prediction, and speed-colored trails
Impact Sandbox Fire meteors at terrain and watch craters form, shockwaves ripple, and debris scatter with tunable impact physics and planetary presets
Magnetism Sandbox Drag magnets, scatter iron filings, and place metal pieces to explore magnetic field lines, attraction, and repulsion with real-time particle simulation

patterns & emergence (6)

cellular automata, fractals, flocking, and self-organization

Cellular Automata Lab Paint initial cell patterns and press play - watch evolving life-like patterns with a rule editor, multiple presets (Life, Brian's Brain, Wireworld), color modes, and grid-based cellular automata
Game of Life Designer Draw starting cells and run cellular automata - create patterns on a grid and watch them evolve under classic Conway's Life or custom B/S rules with preset patterns
Reaction Diffusion Canvas Place reagents and adjust reaction sliders to generate organic stripes, spots, and pulsing textures - a living painting toy based on the Gray-Scott model
Boids Flocking Simulation Spawn a flock of boids and drag predators or obstacles - observe emergent group motion from cohesion, separation, and alignment rules
Fractal Explorer Pan, zoom and adjust parameters to explore Mandelbrot, Julia, Burning Ship, and Tricorn fractals with smooth coloring, glow effects, and deep zoom presets
Crystal Garden Drop mineral seeds and watch crystal clusters branch, merge, and compete for space using diffusion-limited aggregation with nutrients, barriers, and heat

higher dimensions & geometry (5)

4D, hyperbolic space, non-orientable surfaces, and Flatland

The Hyperbolic Gardener Farm on a Poincaré disk where space grows exponentially - plant seeds, water crops, and harvest in a world where parallel rows diverge
The 4D Packer Bin-packing in 4 dimensions - fit tesseract pieces into a 4D truck by rotating objects through the W-axis and viewing 3D cross-sections
4D Tetris Classic Tetris, but the board is 4D - rotate through six planes (including XW/YW/ZW), clear full 3D layers, and climb combos with hold, previews, and a tutorial FTUE
The Klein Bottle Blower Glass blowing in non-orientable space - sculpt surfaces where inside connects to outside and the neck passes through the body
The Slice World Flatland simulator - play as a 3D sphere in a 2D world, seeing 3D objects as growing/shrinking cross-section circles