Tic-Tac-Toe
Get three in a row before your rival does.
↑ This is Tic-Tac-Toe running right here in your browser — no download needed.
About the game
Tic-Tac-Toe is the simplest strategy game: two players place X and O in a 3x3 grid, racing to line up three marks. Against perfect play it always draws - the fun is in out-thinking a human opponent.
How to play
On your turn, click an empty cell to place your mark. The first to align three in a row, column, or diagonal wins.
Tips & strategy
['Always take the center if it is open.', "Block your opponent's two-in-a-row immediately.", 'If you cannot win, force a draw by covering threats.']
Advanced guide
To dominate Tic-Tac-Toe, secure the center on your first move, then adopt a 'threat-and-block' mindset: create your own two-in-a-rows to force responses while covering every opponent threat. The moment you see a double threat you cannot block, the game is already decided.
History & origins
Tic-Tac-Toe dates back to ancient Egypt and remains a universal introduction to game theory.
Frequently Asked Questions
Can the first player always win?
No - with best play it is a draw, but mistakes by the second player can be punished.
What is the best first move?
The center is strongest, followed by a corner.
How do I never lose?
Take the center, then block every two-in-a-row your opponent creates.
Why does it often end in a draw?
Both players can force a draw with correct strategy.
Does corner-first beat center-first?
Center-first is marginally stronger; corner is the next best.
Can this be played against AI?
Yes, and a well-built AI will never lose to you.
Where can I play Tic-Tac-Toe for free?
Right on this page — Tic-Tac-Toe is embedded above, free, legal, and with no download or sign-up. Play with your keyboard on desktop or touch controls on mobile. Your best score is saved in your browser, so it's still there next time. Every game here is original or open-source, with links that stay valid.