Test Your Knowledge
Challenges
Four ways to explore the natural world — from memory games and daily crosswords to head-to-head card battles.
Species Quiz
Seven rounds. Read the story, reveal the clues, name the species. How well do you know the compendium?
Daily Crossword
A new crossword every day, woven from the stories, traits and histories of species in the compendium.
Quiet Kingdom
A Top Trumps-style card battle. Pick your stat, compare your species, and claim the round. Play solo or with a friend.
Nature Pairs
Flip cards, find matches, and learn species facts. Three difficulty modes from simple picture matching to Latin name expert.