Atomic Playground

Chemistry sandbox

Atomic Playground is a single-player chemistry sandbox for PC, set in an orbital laboratory. You add supported substances to a chamber, adjust its temperature, and watch what happens. You can heat or freeze water, investigate molecular transformations, and pause experiments to inspect them.

Free Play is for open experimentation, while guided demonstrations focus on particular changes and make them easier to see. The chemistry the chamber supports is still developing, and its visual models are simplified. The game’s reference covers all 118 elements, but that doesn’t mean every element or reaction is available in the chamber.