Special Tic Tac Toe game playable either against a friend or against the mobile. Tic-tac-toe, also spelled tick tack toe, or noughts and crosses is a game for two players (one player can be mobile), O and X, who take turns marking the spaces in a 3×3 grid, usually X going first. The player who succeeds in placing three respective marks in a horizontal, vertical, or diagonal row wins the game.