Grainfall vs Falling Matter

Grainfall is a falling sand toy. Pick a material, drag across the screen, and watch it react with whatever is already there. Sand piles up and slides back down. Dig a hole and water will find it. Oil floats on top of water, and oil burns. Plants drink from standing water and creep toward it. Fire spreads, leaves ash behind, and boils water into steam that drifts up, cools off, and comes back down as rain. There is no score and nothing to unlock by playing. What you get is twelve materials that all react to each other, and the fun is working out how. Build a glass tank and fill it with acid, since glass is the one thing acid cannot chew through. Pour lava into water and it sets into stone. Light one end of a gunpowder trail and follow it along. Hit record at any point and Grainfall turns what happened into a video, with sound built from the same events you just watched. Save a world and it keeps a picture of itself in your list. Send one to a friend as a small file and it opens straight into their copy. FREE • Sand, water, oil, plant, fire and wall • The full simulation, running at 60fps • Record and export video, with a small watermark in the corner • Your world saves itself and is waiting when you come back PRO - One time purchase • Six more materials: acid, glass, lava, ice, gunpowder, fireworks • Video export with the watermark gone • Save as many worlds as you want, name them, load them back • Send worlds to friends as .grain files • Four color themes • Tilt gravity, so leaning your phone pours everything sideways A FEW THINGS WORTH TRYING • Float oil on water and drop in a single flame • Fill a glass tank with acid • Pour lava into the sea and watch the steam come off it • Light a gunpowder trail at one end • Set off enough fireworks that the falling sparks catch your plants Every material makes its own sound. No account, no ads, nothing collected, and it all works offline.

Falling Matter is a pixel physics sandbox where every grain matters. Pour sand, flood it with water, drop lava on top, and watch the world react. REAL PHYSICS, REAL HEAT • Every pixel has a temperature. Heat spreads fast through metal and slowly through wood and air. • Water boils and freezes, ice melts, lava cools into obsidian, sand melts into glass. • Liquids settle into layers by weight: gasoline floats on oil, oil on water, mercury sinks below everything. • Turn on Heat view to see your world through a thermal camera. 60+ MATERIALS AND TOOLS Powders, liquids, gases, metals, explosives, plants and people. Mix acid with metal to make hydrogen, cool red-hot steel in water, burn wood into glowing charcoal, or let thermite eat through a steel plate. TILT TO POUR Turn on phone tilt gravity, and everything falls toward the lower edge of your phone, just like sand in a jar. BUILD, SAVE, SHARE • Four save slots with previews. • Share a crisp picture of your creation. • Rotate your phone any time; your world comes with you. AND MORE • 13 trophies to discover. • Tips that explain each material (turn them off any time). • Vibration feedback for explosions and lightning. • Works completely offline. No account, no ads, no data collected.