About Physics Sandbox

Physics Sandbox is an open-ended simulation for experimenting with materials and watching how they behave together. You can draw powder and sand, pour liquids, add lava or gas, and place solids that can be split.

The sandbox also includes custom materials, marching squares, and smooth visuals, giving your experiments a more detailed appearance as different substances spread and interact. There is no stated objective, so the appeal comes from creating scenes, testing material behavior, and reshaping the workspace.

How to Play Physics Sandbox

Use the left mouse button to draw materials into the sandbox.

Use the right mouse button to erase parts of your creation.

Drag the interface panels when you want to reposition them.

Minimize the panels to make more room for working with the simulation.

Try separate tests with powder, liquids, lava, solids, and gas to compare their physics.

Tips & Tricks

1Begin with a small amount of one material so its movement is easy to observe.
2Erase a section before adding another substance if you want a clearer comparison.
3Use custom materials after testing the listed types, then watch how their behavior changes in the same space.