Powder Reaction Lab

Mix elements and build machines to discover chain reactions in a falling sand physics sandbox.

How to play

Select an element category from the bottom tabs.
Choose a specific material or machine from the tray.
Drag on the canvas to paint elements or draw machine areas.
Use the pause button to set up complex reactions without interruption.
Watch the elements interact, burn, freeze, or explode.

Controls

Touch: Tap UI to select elements, then drag on the canvas to paint or place machines.
Keyboard: Press numbers 1-9 to select elements, P to pause, and R to reset.
Mouse: Click UI to select elements, then click and drag on the canvas to paint or place machines.

More about this game

Powder Reaction Lab is a falling sand physics sandbox where you experiment with elements, heat, and machines. The goal is to discover how different materials interact, from simple fires to complex chemical reactions. You can pause the simulation to set up elaborate scenarios, adjusting brush sizes and placing lab stations like heaters, coolers, and mixers. There is no end state; you simply reset the lab to start a new experiment.

Tips

Water turns to steam when heated above 110 degrees, and freezes to ice below -13 degrees.
Gunpowder ignites at 95 degrees, causing a massive chain reaction that sets nearby flammable materials on fire.
Use the vacuum lab station to clear out gases, smoke, and fire from your experiments.

Questions

How do I make plants grow?

Select the Plant element and place it near Water. Plants will slowly absorb the water and grow into empty spaces around them.

What do the Lab Stations do?

Lab Stations are machines you draw onto the grid. For example, the Bunsen burner adds heat, the Cryo Fan cools things down, and the Mixer stirs elements together.

How do I erase elements?

Select the 'Erase' tool from the Tools tab and paint over the elements or machines you want to remove.