Daily Puzzles
One new biology puzzle every day, Wordle-style. Each puzzle rotates at local midnight, tracks your guess streak in your browser (no account needed), and is designed to take two to five minutes. Come back tomorrow for a fresh challenge.
Pick a puzzle
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Peptidyle
Deduce a pentapeptide sequence from color-coded feedback on each guess. Builds intuition for how amino-acid side chains drive protein chemistry.
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Deletion mutants
Work out the linear order of genes on a chromosome from a panel of overlapping deletion mutants. A classic genetics mapping puzzle.
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Mutant screen
Reconstruct a metabolic pathway by scoring which auxotrophic mutants grow on which intermediates. Tests your complementation logic.
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Biomacromolecules
Identify whether a rendered chemical structure is a protein, nucleic acid, carbohydrate, or lipid. Fastest way to train your eye on macromolecule shape.
How it works
- A fresh puzzle unlocks at local midnight each day.
- Your streak, last-played date, and guess history are stored in your browser's local storage, so clearing site data will reset your stats.
- Each puzzle has a built-in help panel. If the game area looks empty, open the "How to solve" section on that puzzle's page.
- Puzzles are open-source teaching tools; see the Author page for credits and the License for reuse terms.