"Tic Tac Toe" and "Noughts and crosses" redirect here. For other uses, see Tic Tac Toe (disambiguation) and Noughts and crosses (disambiguation). Tic-tac-toe A completed game of Tic-tac-toe Genre(s)Paper-and-pencil gamePlayers2Setup timeMinimalPlaying time~1 minuteRandom chanceNoneSkill(s) requiredStrategy, tactics, observationSynonym(s)Noughts and crosses Xs and OsTic-tac-toe (American English), noughts and crosses (Commonwealth English), or Xs and Os is a paper-and-pencil game for two players, X and O, who take turns marking the spaces in a 3×3 grid. The player who succeeds in placing three of their marks in a horizontal, vertical, or diagonal row is the winner.