ChemLab: Chemistry & Molecules

Caffeine has 24 atoms. Could you build it? ChemLab is a chemistry puzzle game where every level is a real molecule. Drag atoms onto the canvas, connect them with single, double, or triple bonds, and watch the structure come to life. Get it right, and you've just built something your body, your kitchen, or your pharmacy actually uses. WHAT YOU'LL BUILD Start simple: water, ozone, methane. Then ethanol, vinegar, vitamin C. Then the hard ones — caffeine, glucose, riboflavin, table salt as ions. 205 molecules across 41 chapters, from your first H–H bond all the way to a 47-atom vitamin. Every puzzle is a real molecule, not a textbook simplification. REAL CHEMISTRY, NOT FAKE CHEMISTRY Most chemistry games stop at neutral atoms. ChemLab goes further: • Formal charges — build ozone (O⁻–O⁺=O), nitric acid, nitromethane • Ionic compounds — calcium carbonate, magnesium oxide, sodium chloride as the separate ions they actually are • Hypervalent atoms — sulfate, phosphate, noble gas fluorides • 3D viewer — rotate any molecule you've built in interactive 3D • Structure validation — wrong arrangement? You'll know exactly why HOW IT FEELS The first level takes 10 seconds. Level 50 takes a few minutes. Level 155 (riboflavin, the yellow vitamin) will take you all afternoon — and when you finish it, you've just built a 47-atom molecule from scratch. And that's not the end: the later chapters take you all the way to estradiol at level 205. Tap a bond to change it from single to double to triple. Long-press an atom to set its formal charge. Stuck? The game offers you a hint — and hints always work, even offline. WHAT'S INSIDE • 205 levels • 41 chapters • star rating per level • Built-in periodic table with valence and bonding info • 21 interactive lessons with diagrams and mini-quizzes • Smart flashcards: memorize elements, formulas, and bond types • Molecule collection with 3D specimen viewer • 40+ achievements • Dark mode and colorblind-friendly palette • Plays offline, anywhere • Available in English, French, Spanish, German, Portuguese, Italian, Russian, Japanese, and Korean UPGRADE OPTIONS Most players never pay a cent. If you want to remove ads or unlock the later chapters early, choose what fits — weekly, monthly, yearly, or one-time Lifetime. No subscription is required to enjoy the game. ChemLab is built by two indie developers who love chemistry and got frustrated with apps that show you fake molecules. Every structure in this game is verified against real chemistry — if it's in the game, it exists in the real world. Build something real today.