Pour sand, silt and ash into a falling-particle canvas and watch the buried grains harden into permanent rock.
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.
The falling-sand game is a real genre — a cellular-automaton sandbox where powders and liquids interact and complex behaviour emerges from simple particle rules.
The original goal is geology. Grains that stay buried and undisturbed long enough fossilise into permanent stone, which is petrifaction compressed into minutes.
That gives the genre something it has never had: a reason not to touch anything. Falling-sand games reward constant interference, because stirring the pot is the entertainment; rewarding stratification instead means the winning move is patience, and the pour you leave alone is the one that lasts.
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.