» 3D Tic Tac Toe    Get four in a row horizontally, vertically or diagonally on one plain or across all four plains. Played against the computer. (Java)    http://home.earthlink.net/~cmalumphy/3d.html

» 4D Tic Tac Toe    Four dimensional version of the game offering five difficulty levels. Played against the computer. (Java)    http://www.geocities.com/ResearchTriangle/System/3517/tictac4d/tictac4d.html

» Marubatsu    Online tic-tac-toe game - play against the computer or other players.    http://www.marubatsu.eu

» Pig-Tac-Toe    Two player version of Tic Tac Toe game played with pigs. Game requires Internet Explorer 4.0 or higher. (JavaScript)    http://www.yuckles.com/pigtactoe.html

» Senor Pobre's Tic-Tac-Toe    Game played against a smart-mouthed virtual chihuahua. (Flash)    http://www.infospace.com/games/game_tictactoe.htm

» Tic Tac Toe    Game allows user to specify the height and width of the board, and the number of marks in a row needed to win. Played against the computer. (CGI)    http://boulter.com/ttt/

» Tic-Tac-Toe    Game offers two-player, play against computer, or computer vs computer option. Features three levels of difficulty and saved wins. (JavaScript)    http://ostermiller.org/calc/tictactoe.html