Each sentence hides one Biology keyword from your textbook glossary: one word or a two-word term. The tiles show how many letters each word has. Type it in English and press Enter.
Game Modes
CampaignStudy chapter by chapter. Each chapter is a level of 12 keywords that gets harder as it goes; clear it with hearts left to collect that chapter's organ, and build up your body map.
Final challengeThe last level: the whole syllabus in one run on Easy, Hard or Hell (you can skip straight to it). A wrong answer or running out of time costs a heart. Clear it for a bronze, silver or gold trophy and a place on the leaderboard.
InfiniteUnlocked by clearing the final challenge. Practise any mix of units for as long as you like; your points are saved when you leave.
Hints
A correct answer is worth 10 points. In Infinite, each revealed letter costs 2 points and the Chinese meaning costs 4, but a correct answer always keeps at least 2. In Campaign and the final challenge a hint costs a heart instead, and Hell gives no hints.
Leaderboard
Only whole-syllabus runs count: questions come from every chapter at your level. Choosing books or chapters is for practice and is not published.
Mode
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Chapters
Clear a chapter to collect its organ: finish its keywords before your 3 hearts run out. Clear it without losing a heart for a gold organ. Progress saves to your account, or to this device if you play as a guest.