How the physics works
Lava + water → stone + steam: water sinks into the lighter molten lava and they mix, solidifying into stone with billowing steam.
Trees: drop a Seed 🌰 (or a Plant) onto Dirt 🟫 with water nearby — it sprouts a trunk and grows a leafy tree.
Slime 👾 is a bouncing blob creature: it hops around, bounces off walls, eats plants it lands on (growing bigger), and pops into smoke in fire, lava, acid, electricity or cold. The brush slider sets its size; the eraser removes blobs.
Pressure: explosions blast a shockwave; a Thin Wall 🔲 ruptures under it while solid walls hold. Wind arrows + Fan 🌀 push gases, powders & flames. The faint blue→red glow in the air shows airflow — blue is calm, deep red is strong wind or pressure, so you can see where the air is moving.
Plus TNT, thermite, battery-powered wires (metal & water conduct; water splits into hydrogen), mercury, cryo, clouds, virus, antimatter & fireworks.
Heat view 🌡️: tap it to recolour the world by temperature — blue is cold, red and white are scorching — so you can watch heat spread up a pile or along metal. Undo steps back your last few actions, and Save/Load keeps three creations between lessons.
Chains to discover: burn wood slowly for charcoal (crush it for diamond); chill lava with cryo for obsidian; heat metal beside coal to forge steel; mix sand, stone and water into concrete; split water with electricity into hydrogen and oxygen (then burn them back into water); burn plants to ash, stir it into wet soil for fertile ground where trees race up; and spin a windmill with steam to drive a generator. Tap 🎯 challenges for a guided quest \u2014 finish them all to unlock a secret toolkit (portals, stardust and Maker Mode)!