GuessKinFungi
Guess the mystery fungus! Each guess reveals how fungi relate through their taxonomic classification tree.
How It Works
Guess a Fungus
Type any fungus name. Choose from over 150 species spanning mushrooms, molds, yeasts, and lichens.
See the Tree
Each guess reveals the taxonomy tree — showing how fungi relate through shared evolutionary history.
Find the Target
Use taxonomy clues to narrow down. Truffles and morels are both sac fungi — can you find it in under 5 guesses?
One Fungus Per Day
Every day at midnight UTC, a new mystery fungus is chosen — the same one for everyone around the world. You get 20 guesses to find it. Share your results with friends and compare scores!
Game Modes
Multiple ways to test your knowledge
Real Linnean taxonomy (MycoBank) Data
GuessKin Fungi uses real Linnean taxonomy (MycoBank) data. Every node in the tree is based on real classification data.
Share Your Score
Get a Wordle-style emoji grid to share with friends
Free · No account needed · Works on mobile