Tic Tac Toe - 3D tic tac toe. Get 4 in a row against the computer. Tic Tac Toe - Four dimensional version of this game. TicTacToe online against the computer. First to get 3 symbols on a row wins.
Source is PD and available off the site.
The largest java tic tac toe site on the web. Includes tic tac toe, toe tac tic, and 4x4 tic tac toe. Most have scoreboards and directions. Toe - Play one on one with a friend or play against the computer. You also can watch computer - computer games.