Tic-Tac-Toe

Play tic tac toe 2 player on the same device, or play Mathumo at three strengths. Get three in a row first. Free for ages 4 to 8.

Your turn. Tap a square to place your X.

How to play

Get three in a row first. Free for ages 4 to 8.

  1. Pick a mode: Two players for tic tac toe 2 player on the same device, Play Mathumo, or Puzzles.
  2. Against Mathumo you are X and go first. Choose Friendly, Thinking or Clever for how well Mathumo plays.
  3. Tap an empty square to place your mark. Then it is the other player’s turn.
  4. Get three of your marks in a row, across, down or corner to corner, to win. If all nine squares fill up with no row, it is a draw.
  5. In Puzzles, the board is already part way through a game. Find the one square that wins, or the one square that stops the other player from winning.
  6. Changed your mind? Undo takes back your last move, and Mathumo’s reply.

Stuck on a puzzle? Show a hint lights up the row to look at, and a second tap shows the square. It never plays for you.

What children learn

  • Strategy: seeing which squares matter most, like the center and the corners.
  • Planning ahead: asking “what will happen if I put my mark here?” and “what is my opponent about to do?”
  • Taking turns: waiting, watching and playing fair against a friend on the same device.
  • Patterns: spotting rows, columns and diagonals, and the empty square that completes one.

More games

Four in a Row

Drop your tokens and make a line of four before Mathumo does.

  • Ages 5–8
  • Planning ahead
  • Lines and patterns

Checkers

Jump, capture and crown kings on a mini 6×6 board or the classic 8×8.

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  • Strategy
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Sudoku for Kids

Shape and number puzzles with one answer each.

  • Ages 4–8
  • Logical thinking
  • Shapes and numbers 1 to 6

All free math games →

Questions about Tic-Tac-Toe

How do you play tic tac toe with 2 players?

Choose Two players, then take turns tapping an empty square on the same device, each player with their own mark. The first to get three marks in a row, across, down or corner to corner, wins. If all nine squares fill with no row, it is a draw. Nothing needs signing up for and nothing is saved.

Is there a way to always win at tic-tac-toe?

No. If both players make the best move every turn, tic-tac-toe always ends in a draw. The player who goes first can win only when the other player makes a mistake. That is why the Clever setting here never loses and often draws: it plays perfectly.

Who should go first in tic-tac-toe?

Going first is a small advantage, because the first player can start in the center or a corner. In this game you go first against Mathumo, and the starter switches each time you play again so both sides get a turn.

What is the best first move?

A corner or the center. Both keep the most winning rows open. Starting on an edge square gives the other player an easier time. A good rule for beginners: take the center if you can, then a corner.

What age can children start playing tic-tac-toe?

Many children can play from about age 4 or 5, once they can take turns and spot three marks in a line. The one-move puzzles, “Can you win next?” and “Can you stop a win?”, help children learn to look at the whole board before choosing a square.