Powdertron
SalE · Sep 15, 2026
A physics sandbox built on real chemistry. Drop 674 materials into a falling-sand world and watch them react, burn, freeze and explode. Then wire circuits, test wings in a wind tunnel, or split light through lenses — alone or with friends online.
About Powdertron
Four simulators. One sandbox. Powdertron is a physics playground where the chemistry is real. Its 674 materials — pure elements, compounds, alloys, minerals and industrial stock — each carry a genuine density, melting point, boiling point and formula, and 1,409 reaction rules decide what happens when they meet. Iron rusts. Sodium explodes in water. Limestone calcines. Nothing here is a lookup table of pretty colors. Chemistry Paint sand, water, acid, thermite or plasma onto a canvas of up to 120,000 cells and let it run. Heat it, freeze it, set it alight, pull the air out to a vacuum or switch gravity off entirely. Phase changes, combustion, dissolution, radioactive decay, heat conduction and structural collapse all play out cell by cell in a multithreaded C++ engine — fast enough that a full canvas still runs smoothly. Electronics A real circuit simulator, not a wiring puzzle. Batteries, resistors, capacitors, inductors, logic gates, seven-segment displays and an oscilloscope, connected by actual nets rather than cell adjacency. Build something that works, package it into a named chip, and drop that chip into your next design. Wind Tunnel Draw a shape, put it in the airflow, and s
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