Each guess branches off the clade it shares with the mystery species. The deeper your branches go, the closer you are.
Your guesses will appear here, ranked by how closely related they are to today's mystery species.
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Each guess branches off the clade it shares with the mystery species. The deeper your branches go, the closer you are.
Your guesses will appear here, ranked by how closely related they are to today's mystery species.
A mystery species is chosen each day. Guess any animal and you'll be told how closely related it is to the target.
The score comes from divergence time — how long ago your guess and the target last shared a common ancestor. Guess the exact species and you score 100.
Each row shows the score, your guess's rank out of the whole pool, and the shared clade — the group your guess and the target both belong to. A shared clade of Mammalia means you've found a mammal; Felidae means you're inside the cat family. On a computer, hover a name for a photo; on a phone the photo sits beside each suggestion and guess.
Your guesses build a cladogram. Each one branches off the trunk at the clade it shares with the mystery species, and the trunk steps inward as those clades get narrower. The deepest branch is your best guess so far; the answer sits just below it. Hover or tap a clade name (the underlined labels like Laurasiatheria) for a quick definition.
Raw sequence identity flattens out. Past roughly 300 million years of divergence almost every pair of animals sits at the same noise floor, and the ordering stops being reliable. Divergence time keeps a clean gradient across the whole animal tree.