Sand SimulatorWatch sand pile, water flow and fire spread.

A grid of particles that follow simple physical rules: sand slides into slopes, liquids layer by density, heat changes state.
Experiment freely, then save a picture or a time-lapse video.

Realistic piles and flowsPause and stepMP4 time-lapse

No sign-up No watermark Nothing to install

Loading the sandbox…

Your scenes and videos are made on your device.

THREE SIMPLE STEPS

How to use the Sand simulator

Pick sand or any material

Choose a material and a brush size and shape.

Pour and experiment

Draw into the world, pause to look closely or step one frame at a time.

Keep the result

Save a PNG or scene file, or record and export a time-lapse.

WaveSpeed AI

Turn your sand world into something bigger

Make pixel art, animations and short videos from a prompt with WaveSpeed AI.

Start creating Explore 1,000+ AI Models

1,000+ AI models
Image, video and 3D
Pay as you go

$1 in free credits for eligible new accounts. No card needed. Generators have separate account and credit requirements. The falling sand simulator is free.

Sand simulator FAQ

How does the sand simulator work?

The world is a grid of cells. Every frame, each grain checks the cells below it: it falls if it can, slides diagonally if not, and stops when it rests on something, so piles form natural slopes.

Why does oil float on water?

Every liquid and powder has a density. Heavier materials sink through lighter ones, so oil and ash float on water while sand and mud sink.

Can I slow it down?

Yes. Pause, step one frame at a time, or choose a slower speed to watch each interaction.

Is the sand simulator free?

Yes. Free, no sign-up and no watermark, running in your browser.

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