Tic Tac Toe and Noughts and crosses redirect here. For other uses see Tic Tac Toe (disambiguation) and Noughts and crosses (disambiguation).Tic-tac-toeA completed game of Tic-tac-toeGenre(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.