Sandpainter

the element guide

Twenty-six things you can paint, nine more they turn into, and everything that happens when they meet. Every number here comes straight out of the game's code.

The five rules

Learn these and you can guess what most things will do before you try them.

1 · Heavy sinks, light floats

Powders sink through lighter liquids. Liquids sort themselves by weight, so oil ends up on water and salt water ends up under it.

2 · Gases go up

Fire, embers, steam and methane rise. Steam and methane even bubble up through water and loose sand.

3 · Four things are hot

Hot is what lights, melts, boils and detonates. It only counts when touching side-by-side or above/below. Corners don't count, except for Fuse.

FireEmberLavaTorch
4 · Fuel keeps fire alive

A lone flame floats up and dies in a blink. Next to fuel it stays put, keeps burning and spreads.

OilNapalmPlantWaxFuseSeedStemBloom
5 · Only two things are forever

Acid and explosions can't touch Wall or Clone. The Eraser still removes anything.

WallClone
6 · One step at a time

Fire, frost, plants and chain reactions spread at most one pixel per tick. You can watch a fuse burn or a fire creep across oil instead of it all happening at once.

Who floats on whom

Weight decides who ends up on top. A powder sinks through any liquid lighter than it. A liquid slides under any lighter liquid. Things on the same rung just mix.

↑ floatsweight
0.5Snownever sinks at all; it rests on water and oil until it melts
0.8Oil
0.9NapalmMolten wax
1.0WaterCryo
1.05Acidsinks under water
1.1Nitrosinks under water and acid
1.2Salt waterthe heaviest liquid except lava
1.5Seed
2SandSaltGunpowderSoil
2.2Wet soil
2.5Concrete
3LavaRocklava is so heavy that sand, salt and even rock sit on top of it
↓ sinks

Every element

In the same order as the tray on the left of the game. The swatches use the game's own colours and grain.

Powders

Sand

the calm one

Falls, piles into slopes, sinks through water and oil. Almost nothing bothers it.

  • Lava: sand floats on it. Lava is heavier.
  • Acid: gets eaten.
  • Explosions: blown away.

Salt

sand's reactive cousin

Falls like sand, but it's busy.

  • Water: dissolves. The grain vanishes and the water turns into salt water.
  • Ice and snow: melts them back into water.
  • Plant: slowly kills it.
  • Heat: nothing. Salt doesn't melt.

Gunpowder

sand with a temper

Anything hot touching it sets off a small blast. Each pop throws fire and embers that set off the next grains, so a trail of it goes off like a string of firecrackers.

  • Water: doesn't make it safe. It sinks and stays live underwater.
  • Acid: eats it quietly, no bang.

Concrete

pours, then sets

Flows like sand. Once a grain has sat still for a moment it hardens into set concrete: darker, solid, doesn't move.

  • Great for dams, bowls and bridges.
  • Acid and explosions: still break set concrete. Only Wall is truly forever.

Soil

a sponge

Drinks any water it touches. The water disappears and the soil darkens into wet soil.

  • Wet soil is clumpy: it holds steeper hills than dry soil.
  • Heat: dries wet soil back out.
  • Seeds only sprout on wet soil.

Snow

falls lazy

Drifts down slowly, flutters sideways, and is the lightest powder in the game. It never sinks.

  • Heat: melts fast.
  • Salt or water: melts it too.
  • Left alone it very slowly melts anyway.

Seed

a flower in waiting

Land it on wet soil and it sprouts a stem 6 to 14 pixels tall, topped with a flower in one of five colours.

  • Dry soil, sand, rock: nothing happens. It has to be wet soil.
  • Fire: seeds burn (fuel).
  • Sinks in water.

Liquids

Water

finds its level

Spreads out flat and fills whatever it's in. It reacts with more things than anything else.

  • Heat: boils into steam.
  • Fire: water wins. The flame dies and the water puffs into steam.
  • Lava: both change. Water becomes steam, lava cools into rock.
  • Ice: slowly freezes. Cryo: freezes fast.
  • Salt: becomes salt water. Soil: gets soaked up.
  • Plant: gets turned into more plant.
  • Acid: waters it down into plain water.

Oil

floats, then burns

Lighter than water, so it always ends up on top. It catches fire more easily than anything else, and flames on oil sit and burn instead of floating off. A lit slick burns across its whole surface.

  • Water underneath: where the flames reach the water, they die and the water puffs into steam.

Nitro

liquid dynamite

Any heat and it goes off with a big blast. It doesn't burn, it explodes.

  • Heavier than water, so it sinks to the bottom of a pond: a hidden mine.
  • Acid: dissolves it safely.

Napalm

burning oil

Oil that's already on fire. It flows and floats like oil, with flames dancing on top and balls of flame rolling off it, and it slowly burns itself away.

  • Floats on water, and water can't put it out. It only kills the flames it touches.
  • Cryo puts it out, turning it back into plain oil (which can catch again).
  • Methane drifting into its flames goes off, and anything else its flames touch catches or blows up.

Lava

heavy, slow to spread, always hot

The heaviest liquid. It drops through open air at full speed but creeps when it spreads or sinks. It's permanently hot, so it lights, melts, boils or sets off everything it touches, and it never cools down on its own.

  • Water or salt water: hisses into steam and cools into rock.
  • Cryo: instantly turns it to rock.
  • Sand, salt, rock: float on it.
  • Acid: yes, acid can eat lava.
  • Sparks: lava spits the odd spark off its surface, so methane or oil drifting just above it catches too.

Cryo

liquid cold

The fire extinguisher. It gets used up as it works, sometimes puffing into steam, and slowly evaporates on its own.

  • Water: freezes it to ice.
  • Lava: turns it to rock.
  • Fire and embers: erases them.
  • Torch: erases it too, for good.
  • Steam: condenses it back to water.

Acid

eats almost anything

Every touch has a chance to delete what it's touching, and every bite has a chance to use the acid up. A small puddle only goes so far.

  • Won't eat: water, wall, clone, or other acid.
  • Water: dilutes acid into water.
  • Will eat: spouts, wells, torches, set concrete, lava, salt water, fire…
  • C-4, gunpowder, nitro: dissolves them with no explosion, because acid isn't hot.
  • A little heavier than water, so it sinks and eats whatever is at the bottom.

Solids

Wall

doesn't move, doesn't care

Stays exactly where you paint it. Doesn't burn, melt, dissolve or blow up. Build containers, ceilings and bridges with it.

  • Only the Eraser removes it.
  • It is not a blast shield. The wall survives, but whatever is behind it still gets hit.

Plant

thirsty

Grows into still water — a patch, not the whole pond. Drop a little plant in a pond and it spreads about 14 cells around where it was planted, staying under the surface, then stops; plant more sprigs to grow more. A falling stream, or a puddle a stream keeps topping up on it, won't make it grow, so it can't climb up to a spigot.

  • Salt water: won't drink it.
  • Salt: next to it, slowly kills it.
  • Fire: burns (fuel).

Wax

a candle

Wax doesn't catch fire itself. Near heat it melts into molten wax, which drips and oozes, then hardens back into wax when it cools and settles.

  • Molten wax can catch fire, but rarely.
  • Put a block of it on a torch and you get a dripping candle.

C-4

polite until it isn't

Solid, stays put, completely harmless until heat touches it. Then the whole block goes off at once: the biggest explosion in the game.

  • Acid: dissolves it without a bang.

Fuse

a wick

Heat on any of its eight neighbours, corners included, turns a piece of fuse into flame, which lights the next piece. Draw a line, light one end, watch it run.

  • It burns one pixel per tick, so you can watch the flame run.
  • Diagonal lines work because corners count for fuse.

Ice

a slow frost

Freezes the water touching it, a little at a time. Leave one ice cube in a pond and eventually the pond is ice.

  • Heat or salt: melts it back to water.
  • Steam: touching ice turns straight back into water.

Energy

Fire

rises and dies, unless fed

A lone flame floats up and fizzles out in a blink. Touching fuel it stays, keeps burning and spreads into the fuel, one pixel at a time.

  • Lights: oil, plants, seeds, stems, flowers, fuse, napalm.
  • Melts: wax, ice, snow. Boils: water. Dries: wet soil.
  • Sets off: gunpowder, nitro, methane, C-4.
  • Water: puts it out.
  • Painted in mid-air above fuel, it floats away. It has to touch the fuel.

Methane

a cloud of trouble

A drifting gas that rises and bubbles up through water and sand. Any heat makes it pop, including lava's sparks and burning napalm. A room full of it goes off in a rolling chain, each pop lighting the next.

  • Wind pushes gases hardest, so you can steer a methane cloud.

Producers

Spout

endless water

Drips water into any empty space next to it, forever.

  • Not indestructible: acid eats it and blasts destroy it.

Well

endless oil

Pumps oil out into any empty space next to it, forever. Put one near a torch for an oil fire that never ends.

Torch

endless fire

Throws flames into the empty space around it, and is hot itself, so it melts, boils and lights anything touching it.

  • Cryo puts it out for good (erases it). Acid and explosions destroy it too.

Clone

a copy machine

Paint a block of clone, then drop something on it. The first powder, liquid or gas to touch it is what the whole block learns, and it pours that out of its bottom forever, steadily, like a spout (a gas comes out of the top). Indestructible.

  • Can't copy solids: wall, plant, ice, wax, C-4, fuse.
  • Lava → lava fountain. Steam → cloud machine. Fire → eternal flame. Seed → seed rain.
  • It also copies secret elements: rock, salt water, embers…
  • To reset one, erase it and paint a fresh clone.
  • Tip: paint the element above the clone with a small brush. A big brush painted over the clone replaces it.

Tools

Random

chaos with extra steps

Every pixel you paint is a different pick from 18 elements: sand, water, salt, oil, gunpowder, nitro, napalm, concrete, lava, cryo, snow, acid, seed, soil, methane, plant, wax and ice.

  • A big Random brush has lava and explosives in it, so it goes off by itself.

Eraser

the only true undo-er

Removes anything, walls and clones included. Right-drag or Shift-drag erases with any element selected.

Secret elements

These aren't in the tray. You can only make them.

Salt water

salt + water

Heavier than fresh water, so it sinks and makes a layered sea.

  • Boil it: most goes to steam, but some turns back into salt crystals.
  • Plants won't drink it. Acid will eat it, though it won't eat fresh water.
  • Puts out fire and cools lava, same as water.

Steam

boiled water

Rises, bubbles up through liquids, gathers under ceilings, and turns back into water drops. That's rain. Trapped steam turns back faster.

  • Ice or cryo: instantly back to water.

Ember

blast leftovers

Glowing bits thrown out by every explosion and spat off the top of lava. They live only a moment and float up, but they're hot, so they can set off whatever they land next to.

  • Water: snuffs them out instantly.

Molten wax

wax + heat

Slow, gloopy, floats on water. Away from heat it hardens back into wax wherever it comes to rest.

Set concrete

concrete that sat still

Solid and immovable, but not forever. Acid and explosions still break it.

Rock

lava that met water

Heavy dark grains that tumble and sink through every liquid except lava.

Wet soil

soil + water

Dark, clumpy, and the only thing seeds will grow in. Heat dries it back to soil.

Stem

seed + wet soil

Grows upward one pixel at a time and can push up through water. If something solid is in the way, it may give up. Burns.

Bloom

the flower on top

Pops open where a stem finishes: pink, gold, violet, coral or ice-blue, picked at random. Flowers catch fire easily.

How fast things burn

Each time a flame touches fuel, this is the chance the fuel catches that moment. Higher means it goes up faster.

FuelCatch chance
Fuseevery time
Oil60%
Bloom45%
Seed40%
Plant35%
Stem30%
Molten wax8%
Napalmalready burning, from the moment you pour it
Waxnever catches; it melts first

Explosions

All four explosives go off the moment something hot touches them. Blast size is the radius in pixels. Everything inside is blown into fire, embers and empty space, except Wall and Clone.

ExplosiveBlast
Methane4 px · pop
Gunpowder6 px · bang
Nitro12 px · BOOM, the whole pool at once
C-422 px · crater, the whole block at once

Every blast leaves hot fire and embers behind, so explosives packed together set each other off in a chain. The edge of a blast turns empty space and liquids into embers but leaves solid ground and powders standing.

Recipes to try

Press Space to pause while you set something up, then press it again to let it run. Most of these need a floor: paint a line of Wall along the bottom, or press B for a closed box.

Oil spill

Pour a pool of water, float oil on top, touch one edge with fire.

The slick burns end to end. Steam puffs up where flame meets water.

Dripping candle

Paint a small torch, then a tall block of wax sitting right on it.

The wax melts, drips down the sides and re-hardens into puddles.

Volcano island

Fill the bottom with water, then pour lava in from above.

Lava sinks, cools into rock islands, and sends up clouds of steam.

Make it rain

Wall off a box with a ceiling, put water in, and a torch underneath the water line.

Steam gathers under the ceiling and drips back down as rain.

Garden

Lay a bed of soil, sprinkle water on it, then drop seeds on the dark wet patches.

Stems shoot up and bloom in five colours. Add fire if you're feeling cruel.

Upside-down garden

Grow a garden, then press G to flip gravity.

Everything loose falls to the ceiling, and new stems grow downward.

Demolition

Put C-4 inside a wall box, run a fuse out of it, then touch the far end with fire.

The flame runs in and the crater appears. The walls survive, but they shield nothing: everything within 16 pixels is gone, even outside the box.

Underwater mine

Make a pond and pour nitro in. It sinks and hides on the bottom. Then paint one dab of lava right onto the nitro.

The blast punches a hole straight through the pond. Dropping lava in from above won't work: the water cools it into rock before it gets there.

Frozen pond

Make a pond and drop a single pixel of ice in it.

Watch the frost creep outward. Use cryo if you're impatient.

Defuse with acid

Put C-4 in a wall cup and pour acid over it.

The acid eats it away quietly. No bang, because acid isn't hot.

Lava fountain

Paint a clone block and touch it with lava first.

It turns out lava forever. Try steam for a cloud machine or seeds for seed rain.

Salt layers

Fill with water, then set a spigot to pour salt.

Salt water sinks under the fresh water in a paler band. Heat it and salt crystals come back out.

Gas leak

Wall off a room, fill it with methane, then drop in one spark.

The pops roll through the whole cloud, one lighting the next.

Firefighter

Start a big oil fire with a torch, then pour cryo on it.

Flames vanish, the torch goes out for good, and the cryo puffs into steam as it works.

Gravity, wind and spigots

Gravity (G)

Flips everything. Powders and liquids fall up, gases sink, the spigots move to the bottom edge, and stems grow the other way.

Edges (B)

Out of the box, the edges are open, like the original game: things that fall past the bottom are gone, and gases float away off the top. Press B (or the Edges button) for a closed box that holds everything in.

Wind (slider)

Pushes gases hardest, steers liquids as they flow, and nudges powders a little. It only moves things into empty space.

Spigots

Four pourers along the top, all off when the game opens. Click a spigot's name to pick what it pours: sand, water, salt, oil, gunpowder, nitro, napalm, concrete, lava, cryo, snow, acid, seed, soil or Random. Its five bars set how hard. Clicking any bar starts it, off stops it.

Speed and step

- + pick a speed from ¼ to 4. 1 is a relaxed 30 steps a second, 2 is the full pace of the original game (60 a second) and 4 is double that. Space pauses, . moves one tick at a time: good for watching a reaction frame by frame.

Line tool (L)

Flip the Tool switch on the right from Free to Line (or press L). Press and drag to stretch out a straight line, which shows as a faint preview, and let go to paint it. Esc drops a half-drawn line. Walls, floors and fuses are quick this way.

Single or mixed colours (K)

The game opens with one flat colour per element, like the original, so you can read a scene at a glance. The Single colours button on the right (or K) switches to Mixed colours, where every grain is a slightly different shade. It changes only how things look, never how they behave, and the game remembers your choice.