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Why Play on Stone Online?
Free to Play
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Real-time Multiplayer
Play with real opponents from around the world
Practice with AI
Sharpen your skills against AI at 4 difficulty levels
Play vs AI
Choose your difficulty level and start playing instantly
About this Game
Play the Hex board game online — free, no download, no signup. Hex is a pure strategy game on a hexagonal grid where you race to connect your two opposite edges. No draws possible, every move matters. Simple rules, deep tactics, and beautiful mathematical elegance.
Stone Online offers four AI difficulty levels to help you master connection strategies. Practice against AI, then challenge real opponents in real-time. Completely free, instant play in your browser.
Invented in 1942 by Danish mathematician Piet Hein and independently rediscovered by Nobel laureate John Nash in 1948. Nash proved the first player always has a winning strategy — but nobody has figured out what it is. That mystery is part of the magic.
How to Play
Play on an 11×11 rhombus-shaped hexagonal board. One player connects top to bottom, the other left to right. Take turns placing stones on empty cells.
Form an unbroken chain between your two edges to win. Draws are impossible. Swap rule: if the first move is too strong, the second player can steal it. Try a game against the AI — you'll discover the beauty of connection strategy!
Game Modes
Frequently Asked Questions
How do I play Hex online?
Click Play Now, create a room or join an existing one. Once all players are ready, the game starts automatically.
Is Hex free to play?
Yes, Hex on Stone Online is completely free. No downloads, no ads, no subscriptions.
How many players can play Hex?
Hex supports 2 to 2 players on Stone Online.
Do I need an account to play?
You can play instantly with anonymous login. No email or registration required.
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