⏳ Falling Sand

How to Play ⏳ Falling Sand

Paint with sand, water, fire and other elements and watch physics unfold in real time. A classic cellular automaton sandbox where everything interacts — sand falls, water flows, fire spreads and glass contains.

• 🪣 Select a material — sand, water, fire, wall, ice, plant, acid and more.
• 🖱️ Draw on the canvas to place that material — watch physics take over.
• ⚡ Materials interact — fire burns plants, water puts out fire, acid dissolves walls.
• 📐 Build structures with wall to contain sand or water, then open a gap and watch it pour.
• 🗑️ Clear the canvas to start a new experiment anytime.

Try building a funnel shape with walls, filling it with sand from the top, then adding water to see how they layer. Or create a room with a fire inside and plant material on the walls and watch it burn. The emergent behaviour from simple rules creates endlessly fascinating results!