Molekit is a chemistry puzzle game built on one action: drag one atom onto another and watch them bond. Two hydrogens and an oxygen make water. Sodium and chlorine make table salt. Every element and every molecule in the game is real, so you pick up a little chemistry while you play.
It started as a single endless mode and grew into a small lab of seven games. Get it on the App Store for iPhone and iPad, or play the full game in your browser on this site or on itch.io. The Android version is on the way.
Seven ways to play
- Endless: fill the box with molecules and chase your best score. Cards never run out, so every run is different.
- Puzzle: 24 handmade levels. Clear the whole box and earn three stars.
- Reaction Room: 90 seconds of falling cards. Bonds form on their own and chain reactions multiply your score.
- Duel: pick a deck and face the computer. Atoms move like chess pieces: water protects, alkali metals explode.
- Molecule Poker: build molecules from your hand, multiply your score with catalysts and beat 8 levels.
- Octet: reach exactly 8 valence electrons without going over. Complete a real molecule for a bonus.
- Last Atom: match the group or period and be the first to empty your hand.
Learn while you play
Tap a molecule to see what it is and where you meet it in daily life. Collect them all, from water and table salt to ozone and ammonia. Valence electrons, groups and periods start to make sense without opening a textbook. Molekit is not a lesson, though: the chemistry is there because it makes better puzzles.
Made for short breaks
The controls are drag and drop, so a round takes a minute to learn. Your game is saved and you continue where you left off. When you get stuck, the tool bag has undo, reroll, a pipette, a Bunsen burner, a cooler and a free atom. There are light and dark themes, and once it is installed the game works offline.
How to play
- Drag a card onto the card next to it. Atoms that can bond join together.
- The small dots under each element show how many bonds that atom can make.
- Complete a real molecule, such as water (H₂O) or table salt (NaCl), to score.
- In Puzzle mode, clear the whole box to earn three stars. In Endless, cards keep coming and you chase your best score.
- Stuck? Open the tool bag: undo a move, reroll a card or use one of the lab tools.
Questions
Is Molekit free?
Yes. Molekit is free to play and supported by ads. In the browser version there is a small banner at the bottom of the screen.
Do I need to know chemistry?
No. Each card shows what you need, and the first rounds teach the rules. You will pick up valence, groups and periods along the way.
Can I play it like an app on my phone?
Yes. Open the game in your phone browser and choose Share → Add to Home Screen (iPhone) or Install (Android). It then opens full screen and works without an internet connection.
Is my progress saved?
Your progress is saved in your browser on your device. If you clear your browser data, the save is deleted too.
