Free to play · No sign-up

Prove Your Mind.
Climb the Ranks.

Tic Tac Toe with a twist: answer a quick question to claim each square. Beat your opponent, climb the leaderboard.

Free forever
Play in seconds
Skill only, no luck
X
Player X
LIVE DEMO
Player O
O
Ranked match+25 ptsWinner
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Matches played
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Daily check-ins
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Playing now

Why You'll Like It

Quick matches, real opponents, and a ranking that rewards the sharper player.

XXXOOTRIVIAWhat is Celo's consensus?✓ Proof of StakePoW✓ CORRECT!YOUR TURN

Think to Win

You only claim a square if you answer its question right. Being clever with the board is not enough on its own.

★+25 PTS★−25 PTS🔐 SMART CONTRACT★ NO STAKINGTRUSTLESS ✓

Rankings You Can Trust

Every ranked result is recorded publicly, so nobody can quietly edit the leaderboard. Your wins stay yours.

MiniPay● ConnectedRELAYERpays gas0 GAS FOR YOUNO SIGNATURE NEEDEDrecordMatch()

Always Free

No entry fee, no deposit, nothing to buy. You never pay to play a match, win or lose.

LEGENDARYMIND DUEL · BADGE🏅 ON-CHAIN✦✦✦✦✦✦WIN STREAK× 5Wallet: 0x44…

Earn Badges

Win streaks and milestones unlock badges: First Blood, Pentakill, Flawless Victory.

QUESTION #3Which language for Celo contracts?A. JavaScriptB. PythonC. Solidity ✓D. C++★ FREE hint✕ × 2 eliminated

Free Hints

Stuck on a question? Every match gives you free hints: remove wrong answers, reveal the category, or buy time.

SENDER0x44…WINNER0x9f…★FINALITY~1s FAST✓ SETTLEDCelo · 1s blocks+25 PTS 🎉

Instant Results

Your points and new rank update the moment the match ends. No waiting around.

Step by step

How It Works

Your first match takes about two minutes.

1
Open and play
No sign-up form and no password. Play as a guest, or connect a wallet to save your rank.
2
Pick your match
Ranked moves your position on the leaderboard. Casual and vs-AI are just for fun.
3
Answer to claim
Pick a square, answer its question correctly, and the square is yours.
4
Win and climb
First to line up three wins. Your points update straight away.
One turn, start to finish
LIVE
1
Tap a square
Pick where you want to play
2
A question pops up
Four options, a few seconds on the clock
3
Answer it right
The square is yours. Get it wrong and you lose the turn
4
Line up three
You win the match and your points go up
Multiplayer

Game Modes

Start with Classic. Try the others when you want a bigger challenge.

XOXOX★ +25 PTS1v1 DUEL

Classic Duel

EASY

The normal 3×3 board. Answer a question to claim a square, and line up three to win.

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XOXSHIFTS EVERY 3 ROUNDSDYNAMIC BOARD

Shifting Board

MEDIUM

Every few turns the squares slide around, so the board you planned for is not the one you get.

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XO→XOX→XO3×34×45×5EVOLVING

Scale Up

HARD

The board keeps growing as you play: 3×3, then 4×4, then 5×5. More squares, more ways to win.

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TIME LEFT00:05BLITZ5s / ANSWERANSWER OR LOSE YOUR TURN

Blitz

INTENSE

Five seconds per question. No hints, no extra time. Think fast or lose the turn.

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Ready to Duel?

Jump into a match and prove your mind is worth more than your opponent's.