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Photochemistry

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About Photochemistry

Photochemistry is a puzzle game set among the ruins of war, in a world running out of nutrients. You design, build and execute mechanisms to produce nutrients and help restore the world. As you progress, you also uncover truths about your past and what you were designed to do.

Solve the puzzles

The game does not prescribe a solution: you use your creativity and critical thinking to devise mechanisms of your own. It contains more than 20 levels, including optional levels that test your limits, across three acts. Each act has its own environment and puzzle elements.

Expand your toolkit

You unlock new parts that give you more ways to build and can make the most challenging levels manageable. A built-in recorder lets you share your solutions as GIFs.

Create your own stages

A built-in level editor lets you make stages of your own.

Frequently asked questions

Steam lets publishers create keys to sell in other shops. Once you activate a key, the game is yours to keep, just like a store purchase.

Disclaimer: CD keys have an inherent 1–2% average failure rate. Check the shop terms for buyer protection info. Steam offers no buyer protection for keys bought in other shops and doesn't refund them.

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