All levels

Tic-Tac-Toe Thinker

Explore taking turns, winning lines, blocking and planning ahead with friendly Sun and Moon pieces.

How to play

Try a thinking puzzle, play with Momo, or take turns with someone on this screen. Choose an empty square. Three across, down or diagonally makes a line. A full board with no line is a draw.

Find two Suns with an empty space in their line, or stop Moon from making three. Momo’s strategy follows your shared profile level. Draws are successful practice. Hints, Undo and Restart are always available when it is your turn.

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