Classic 3×3
The original. Three in a row wins. With perfect play it's always a draw — but most people don't play perfectly.
⏱ 1–2 minutes per round • Difficulty: ★☆☆☆☆
Play Classic →Every Tic-Tac-Toe game, one place.
Four variants, each with its own personality. Some you've played a thousand times. Some you've never heard of. All of them free to play right now.
Ultimate Tic-Tac-Toe
Nine games inside one. Your move on a small board decides where your opponent plays next. Strategy goes deep fast.
⏱ 10–20 minutes • Difficulty: ★★★★☆
Play Ultimate →Misère (Reverse)
Three in a row? You lose. Classic flipped on its head — try to make your opponent get three in a row.
⏱ 1–3 minutes • Difficulty: ★★★☆☆
Play Misère →Big Board (4×4 & 5×5)
More room to maneuver. Larger boards mean longer games and richer strategy. Get four in a row to win.
⏱ 3–8 minutes • Difficulty: ★★☆☆☆
Play Big Board →Not sure where to start?
If you haven't played tic-tac-toe in a while, start with Classic 3×3 on Medium difficulty. Want a brain workout? Ultimate is what chess players play when they're bored. Want something weird? Misère flips everything you know about the game.
And if you'd like to know why the AI plays the way it does, the minimax explainer breaks it down.