Games

Falling Sand Box

A pocket physics sandbox. Pour sand and water, build walls, and watch grains pile up, flow and sink.

Falling Sand Box

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Watch a 20-second trailer

A real run of the game, recorded with captions and no sound.

How to play

  1. Pick a material: sand, water, wall or erase. Press and drag on the canvas to draw with it.
  2. Sand piles up and slides down slopes. Water flows and levels out. Sand sinks through water.
  3. Walls stop both. Choose a brush size and Pause to freeze the scene.
  4. Clear wipes the box. The counters show how much sand and water you have poured.

Controls: mouse or touch. Made by CalcoTools.

Tips and strategy

  • Build a bowl from walls, then fill it with water and drop sand in.
  • Use the large brush for quick piles and the small one for detail.
  • Pause, draw walls or erase grains, and resume to steer the flow.
  • Pour sand onto a wall ledge to see it slide off the edge.

FAQ

Is there a goal?
No. It is a toy for experimenting with sand, water and walls.
Are grains ever lost?
No. Grains and water cells are only added when you draw and removed by the eraser or Clear.
Can I use it on a phone?
Yes. Draw with a finger.

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