Toys & Sandboxes
Pure play, no objective: drop falling sand and watch fire, water and plants react; fling planets into orbit in a gravity sandbox; steer a flock of boids; grow Conway’s Game of Life; compose on a glowing ToneMatrix; stir a 3D particle galaxy; decorate an isometric room; stock a pocket aquarium; or see tonight’s actual sky mapped for your exact location.
Several of these double as art tools — the flow-field and harmonograph studios export 4K generative wallpapers, the kaleidoscope and ASCII cam turn your webcam into something worth screenshotting, and liquid type melts your words into shareable motion. Everything runs live in the browser at full frame rate, no install, no account.
They are also quietly educational: the gravity sandbox integrates real n-body physics, boids is the classic emergence algorithm that inspired film crowd scenes, Game of Life is the cellular automaton every computer scientist meets eventually, and the star map is calculated from your real time and place. Open one to kill ten minutes and you will accidentally learn how something in the universe works.
Falling Sand Playground
Drop sand, water, fire, plants and more — watch them flow, burn and react. Lose an hour.
Gravity Sandbox
Fling planets into orbit and watch them dance, collide and form systems. Mesmerizing.
Your Sky Tonight
A live star map for your exact location and time — stars, constellations, planets and the moon phase. Tap anything to name it.
ToneMatrix Sequencer
Click the glowing grid to compose a melody that loops forever. Iconic and addictive.
Pocket Aquarium
Stock a calm little fish tank and watch it live. Cozy and ambient.
Your Tiny Planet
Build and customize a cute little 3D planet — then share it with a link.
Optical Illusion Lab
Interactive optical illusions you can drag and tune to break your own brain.
Synesthesia Keyboard
Every key types a color and a tone — make art and music just by typing.
Flow Field Art Generator
Generate gorgeous flow-field artwork — tweak the params, export 4K wallpaper.
Conway's Game of Life Studio
Draw cells, hit play, and watch life unfold. Save and load your own patterns.
ASMR Board
A grid of perfectly satisfying clicky, poppy, tactile sounds. Pure fidget joy.
Particle Galaxy
Stir a mesmerizing 3D galaxy with your cursor and export a still.
The Sound of Your Room
Records a few seconds of ambient room noise, paints its spectrum into a mandala, and guesses your continent from the 50 Hz vs 60 Hz mains hum.
Live ASCII Webcam
Your camera, rendered live as real-time ASCII art. Snap a frame to share.
Keystroke Sigil
Type a phrase twice and your dwell-and-flight micro-timing is forged into a deterministic geometric crest — your typing fingerprint, with a score that proves it’s really you.
Window Constellation
Open the page in several browser windows and glowing strands connect them across your real screen while a little creature crawls window to window.
Boids — Flocking Sim
Scatter a swarm and watch it think as one — separation, alignment, cohesion.
My Room
Decorate a cozy isometric room with furniture and stickers. It saves and shares.
Window Cannon
A ball physically rolls off one monitor and flies across the gap onto your second screen — because the page knows your real display layout.
Liquid Type
Type and watch your words ripple, melt and flow like liquid. Export it.
Soul of Your Music
Drop in your Spotify, Apple or Last.fm history export and watch it bloom into a generative star-field nebula — every track a star. Fully private, any month of the year.
Harmonograph Studio
Hypnotic Lissajous & harmonograph curves you can tune and export as wallpaper.
Satisfying Blob
A glossy blob that wobbles to your mouse and your voice. Oddly addictive.
See Your Voice
Speak or sing and watch your voice bloom into living color and shapes.
Mirror Mandala
Your webcam folded into a living kaleidoscope. Snap a frame to share.
Haunted Tab
A page that knows when you leave for other tabs — it decays while you’re gone, whispers into the tab title, and logs exactly how long you abandoned it.
Toys & Sandboxes — frequently asked questions
No — every toy loads instantly in your browser and works on phones, tablets and desktops. There is nothing to install and nothing to sign up for.
Many are: the gravity sandbox integrates real n-body physics, the pendulum and flocking toys use the genuine algorithms, and the star map is computed from your actual location and time. They are simplified enough to stay fun, real enough to teach.
Yes — most toys let you export a PNG (some at 4K wallpaper size), save patterns locally, or share a link that recreates your exact creation.
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