Sand World is a realistic physics sandbox game that simulates the dynamic effects of sand falling. Draw sand, flame, water, lava, and dozens of other elements on the screen to watch them fall, flow, burn, freeze, dissolve, and react in real time. Fill the world with a variety of reactive elements. More than 230 materials are available: • Powder: sand, gunpowder, ash, coal, salt, snow, cement, sodium, phosphorus, thermite, baking soda, dry ice, etc. • Liquids: water, oil, acid, lava, mucus, honey, mercury, gasoline, milk, napalm, etc. Each liquid has its own unique density and fluidity, with heavier liquids sinking below lighter liquids. • Gases: steam, smoke, helium, methane, toxic gases, oxygen, hydrogen, etc., which rise and drift until they dissipate. • Solid: stone, wood, ice, metal, glass, brick, concrete, diamond, gold, obsidian, etc. • Special items: spreading burning flames, exploding TNT, a black hole that devours everything around, a plasma lamp that emits an arc spark, and a portal that can transport any dropped objects. Plants, weather, electricity, and a wide variety of creatures and vehicles, each with real behavior. Launch Weapons and Fireworks Launch rockets, cannons, bombs, nukes, grenades, arrows, meteors, machine guns and streamers into your world, summon lightning, or fire fireworks of six colors, which will climb and burst into rings, peonies, willows, palms, crackles, chrysanthemums or crucibles in five sizes. Driving, flying, navigating and placing more than 30 kinds of vehicles: daily cars, boats and passenger planes; agricultural and industrial machinery, such as tractors, harvesters, excavators, giant trucks and cement mixers; sailing boats and airships that ride the wind and waves; hovercraft and jet boats; military equipment, including bombers, warships, tanks and atomic bombers dropping real ammunition; and even rockets and UFOs. Watch them scroll, sail, fly or hover in your world. Plant a garden, learn chemistry and sow seeds in the soil at the water's edge, watch them sprout and grow. Explore real chemical principles in the game: acid dissolves stones, sodium dissolves in water will burst, baking soda and vinegar will create bubbles, and thermite melts metals into lava. The "Reactions" screen in the app explains each reaction, allowing you to understand the rules behind the chaos. Explore the Generated World and generate new maps from 14 themes: Castle, Island, Jungle, Garden, Zoo, City, Doom, Underworld, War, Arctic, Volcano, Whirlpool, Workshop and Plants. Each theme has real structure and details: a castle with its own walled village, a city planned into zones with subways and sewer systems underground, a zoo with real animal enclosures, floating islands with hidden caves and buried treasures, sunken remains and wreckage at the bottom of the sea, and defensive bases for confrontation between the two sides in the war theme, each base is equipped with its own cannon. Solving well-designed puzzles In addition to free play, test your understanding of simulation with puzzle challenges. These challenges include: filling areas, protecting areas from hazards, or transporting materials to target locations within a limited budget. See the world from a new perspective. Switch between day, normal, night, thermal imaging and blueprint view modes to watch your work shine in the dark or display heat in pseudo-color. When you close the app, your entire canvas-every grain of sand, every flame, every creature-is automatically saved and restored to the state it was in when you left. Most materials, weapons, fireworks, creatures and maps are free to try. In-app purchases unlock a complete library of materials, all weapons and fireworks, a complete library of creatures and vehicles, additional maps, and a miniature world of precision brushes. Whether you want to build complex chain reactions, nurture miniature ecosystems, or melt, freeze and explode objects just for fun, Sand World transforms your screen into a miniature interactive universe.