Mega Tic-Tac-Toe 9x9 Full

from , originally released 31st December, 1969

Tic-tac-toe (noughts and crosses) 9x9 is a pencil-and-paper game for two players, X and O, who take turns marking the spaces in a 9×9 grid. The X player goes first. The player who succeeds in placing five respective marks in a horizontal, vertical, or diagonal row wins the game.

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