A little experiment. A new question.

Welcome to your orbital laboratory. Add ingredients to the chamber, change the temperature, and look closely at what happens. Atomic Playground is a single-player chemistry sandbox about exploring the small things that make up our world.

Mix, observe, and try again

Explore supported substances and reactions in Free Play, or follow guided demonstrations that make a particular change easier to see. Freeze and heat water, investigate molecular transformations, and use the chamber controls to pause and inspect the action.

Get closer to the molecules

Use the microscope to take a closer look at molecular structures. Change your viewpoint and follow the details that are easy to miss when an experiment is in motion.

Turn discoveries into new possibilities

In Research, observations earn research credits that unlock ingredient collections. Work through research goals and save your research progress, then return with another question to investigate. Free Play is available for open experimentation.

Meet Vera and Vex

Your two voiced guides bring conversation, curiosity, and a little disagreement to the lab. Read along with captions as they introduce ideas and accompany supported experiments.

Open the Living Book

Explore a reference for all 118 elements, with searchable entries, isotope information, interactive orbital illustrations, and voiced explanations. Rotate the models, select orbital clouds, and explore three radiation illustrations. The book is available from the menu and during play, independently of research unlocks.

A laboratory with a view

Take a moment between experiments to enjoy the observatory, the sun outside your window, and the sound of a working laboratory.

Growing through Early Access

The current game combines a playable laboratory, research progression, guided experiments, and the Living Book. We plan to expand supported chemistry and guided experiments, improve performance, and make the learning tools clearer with player feedback. Chemistry coverage is still developing. The chamber and book use simplified visual models; the 118-element reference does not mean every element or reaction is supported in the chamber. Guided demonstrations and open experimentation serve different purposes, and results are not a substitute for professional chemical calculations or real laboratory guidance.