Molecule Forge

Wire the atoms together so every valence is filled and the molecule matches.

How to play

You're given a set of atoms and a target molecule. Connect them with bonds so each atom's valence is satisfied and the structure matches the goal — single, double or triple bonds where they're needed.

• Click one atom, then another, to bond them together
• Click an existing pair to upgrade its bond order or remove it
• Satisfy every atom's valence to complete the molecule
• Match the target structure to clear the level

Game modes

• Easy, Medium or Hard difficulty for bigger molecules
• Daily puzzle or Practice for fresh targets

Controls

• Desktop: click two atoms to bond; click a bonded pair to change or remove the bond
• Phone & tablet: tap two atoms to bond and tap a pair to adjust it

Tips & strategy

• Place the most-bonded atom (often carbon) at the centre and build outward
• Count each atom's remaining bonds — leftover valence means it's not done
• Use double and triple bonds to satisfy atoms that can't reach enough neighbours

What you'll learn

Molecule Forge is a chemistry puzzle about valence and bonding, building molecules whose structure obeys the rules of how atoms connect.

• Skills: chemical bonding, valence, molecular structure, Lewis structures
• Best for: roughly grades 9–12 (ages 14+)
• For parents & teachers: bonding and molecular shape made constructive.

About Molecule Forge

Molecule Forge is a chemistry puzzle about valence, bonding and molecular structure. It's an original, free browser game made in-house for PlayPendium.

A free, original browser game on PlayPendium — no download, no install. Browse all games →