Sediment

Pour sand, silt and ash into a falling-particle canvas and watch the buried grains harden into permanent rock.

How to play

A falling-sand sandbox built around burial. Pour powders into the grid and watch them settle into layered strata. Grains that stay buried and undisturbed long enough fossilize into permanent stone — the satisfying core hook. In Daily mode a light goal (fossilize a zone, reach a depth) gives you a target; the Sandbox is pure free play.

• Select a material — sand, silt, ash, water or erase — and pour it into the canvas.
• Powders cascade and pile; water flows and pools around them.
• Buried grains that settle long enough compact into stone, which is permanent and can't be overwritten.
• In Daily, complete the scenario's goal (fossil zone or depth line) to finish the run.

Controls

• Desktop: click and drag to pour; keys 1–5 pick a material; [ and ] resize the brush; Space pauses the simulation.
• Phone & tablet: drag across the canvas to pour, and tap the palette and buttons to switch tools.

Tips & strategy

• Pile grains deep over a target area — only well-buried, undisturbed material fossilizes.
• Pause the simulation to place precise strokes, then let it run to watch them settle.
• Use water to shift and pack powders, but keep the fossil zone calm so stone can form.

About Sediment

Sediment is an original falling-sand sandbox that turns the genre's drifting powders into geology, rewarding patient burial as grains petrify into lasting rock. Play it free in the browser on PlayPendium with goal-driven daily runs and an open sandbox.

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