70%Strong matchSpaceChem
95%3k95% positive reviews, Overwhelmingly Positive across 3k reviews·Puzzle · Difficult
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Interact with elements and molecules in a way that you have never before! Observe them and make them react with each other in the sandbox mode. Synthesize every molecule in the quest mode. Discover countless macromolecules and the elegancy of chemistry.
Project Chemistry is a chemistry simulation that allows you to observe and conduct reactions with elements and molecules, experience chemistry in 3D for the first time and learn in the process. You can choose to experience this simulation in either the sandbox mode or the quest mode.
View any of the 118 elements in 3D, watch its electrons orbiting around the nucleus. Synthesize them into molecules by conducting reactions!

Choose one out of 200 molecules, view how its bonds are shaped and positioned. Conduct reactions at any scale!

No limits, no grind. Immerse yourself with the elegancy of chemistry.

With the goal of synthesizing every molecule, complete challenging quests to test your chemistry skills to the end.

Steam data © 2026 Valve Corporation. Trademarks are property of their respective owners.
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