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Guess the mystery element in 6tries! After each guess, you'll see how your element compares to the answer across five categories: atomic number, period, group, category, and state.
✓Green = correct
↑Amber with arrow = answer is higher/lower
✗Red = wrong category/state
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Periodic Puzzle is a free daily chemistry game where you guess a mystery element from the periodic table. After each guess, you receive comparison clues showing whether the answer has a higher or lower atomic number, period, and group, and whether the category and state at room temperature match. It is like Wordle for science enthusiasts — deductive reasoning meets chemistry knowledge.
A new element is featured every day on Gamesite. Play in your browser on any device, completely free. Whether you are a chemistry student, a science teacher, or just curious about the elements, Periodic Puzzle makes learning the periodic table genuinely fun.
Yes! Periodic Puzzle is completely free to play on Gamesite. No downloads, no accounts, no hidden fees.
Absolutely. Periodic Puzzle works on any device with a modern web browser — phones, tablets, and desktops.
A brand-new Periodic Puzzle is published every day. Come back tomorrow for a fresh challenge.
A basic familiarity with the periodic table helps, but the comparison clues after each guess teach you as you play. Many players find they learn element properties naturally over time.
You have six guesses to identify the mystery element. After each guess, you receive comparison clues for atomic number, period, group, element category, and state at room temperature.