Notakto is a two-player game that is similar to Tic-Tac-Toe, except that both players make X's, and whoever completes three-in-a-row LOSES the game.
One-board Notakto game, in progress
For a challenge, play a multiboard game of Notakto. On your move, make an X on just ONE of the boards. The computer may respond on the board you played on, or on some other board. A board that already has a three-in-a-row configuration is considered out of play. To win, force the computer to complete the last three-in-a-row configuration on the last available board still in play.
Three-board Notakto game, in progress
Choose the Rated play option and work toward becoming a Notakto World Champion. Winning games at higher levels of difficulty on multiple boards
will increase your rating faster.
Rated play of Notakto