Run each creature down a branching yes/no key into the right kingdom and class, then try building a key of your own.
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How to play
In Sort mode you place each organism into a group by answering the key's yes/no questions about its traits. In Build mode you become the taxonomist: author an ordered list of yes/no rules that correctly separates every creature into its group. Get them all right to clear the round.
Each branch tests one trait, follow it down to a leaf group
Use hints sparingly; they cost points
In Build mode, rules are checked top to bottom with a final catch-all group
Controls
Desktop: click a creature then click its group, or click to add rules and predicates
Phone & tablet: tap to select and place, every control is touch-friendly
Game modes
Sort: classify creatures using the given key
Build a Key: design your own working classification
Daily or Practice, across Easy/Medium/Hard difficulty
Tips & strategy
Start with the broadest trait that splits the group most evenly
Watch for edge creatures that share traits with two branches
In Build mode, order rules from most general to most specific
What you'll learn
Classify is a taxonomy puzzle that teaches dichotomous keys and biological classification, training the logic of sorting living things.
For parents & teachers: practical practice with the keys scientists actually use.
About Classify
Classify is an original taxonomy puzzle that teaches dichotomous keys and biological classification. It's free to play in your browser with nothing to install.
A free, original browser game on PlayPendium. No download, no install.
