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GuessKinStars

Guess the mystery star! Each guess reveals how stars relate through their constellation and sky region.

Play Today's Challenge

How It Works

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Guess a Star

Type any star name. Choose from over 150 stars across constellations in both hemispheres.

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See the Tree

Each guess reveals the celestial tree — showing how stars relate through shared constellations and sky regions.

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Find the Target

Use constellation clues to narrow down. Sirius and Betelgeuse are neighbors in the Orion family — can you find it in under 5 guesses?

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One Star Per Day

Every day at midnight UTC, a new mystery star 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!

Same star globallyResets at 00:00 UTCTrack your streaks

Game Modes

Multiple ways to test your knowledge

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Daily

One star per day. Same for everyone.

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Practice

Random star. Unlimited plays.

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Brightest

The brightest stars visible from Earth.

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Zodiac

Stars in the zodiac constellations.

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Hard Mode

Tree is hidden. Only text clues.

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Stats

Track progress

Real IAU star catalogue Data

GuessKin Stars uses real IAU star catalogue data. Every node in the tree is based on real classification data.

0 starsIAU star catalogueWikipedia images

Share Your Score

Get a Wordle-style emoji grid to share with friends

⭐ GuessKin Stars 2026-03-05 4/20

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Free · No account needed · Works on mobile