← Fun
Falling Sand
Draw materials on the box and watch the physics play out. Sand piles, water levels, oil floats, fire spreads, acid eats, plants creep.
Brush 3
Speed 2
Runs entirely in your browser. Drag on the box to draw the selected material. Water puts out fire and makes steam; steam condenses back to water. Oil floats on water and burns. Acid dissolves most things but not walls. Spout drips water. Plant creeps along water; ice melts near fire and slowly freezes water it touches.