ChemHex

One reaction at a time

Crash-landed on a barren planet, you have one way home: chemistry. Fit real molecules onto hex grids and turn a barren rock into a living world.

ChemHex

About

Crash-landed on a barren planet, you have one way home: chemistry. Fit real molecules onto hex grids in clever placement puzzles, meet the colony's oddball crew, and turn a barren rock into a living world, one reaction at a time.

Details

Every Quest Is a Reaction

Place real molecules like water, ammonia and sulfuric acid onto a hex grid so every atom finds a partner and every bond lines up. Simple rules, tricky solutions, and no homework: the puzzles come first.

A Living World

Zoom out to see your work: a cute little planet that slowly turns from an orange desert into a green, breathing home.

An Ever-Changing Board

Farming, power, air, mining and even the weather: each part of the colony brings new molecules, new rules and new kinds of puzzles. Just when you think you know the board, it changes on you.