Tic tac toe is a addictive game for two players, X and O(two humans or human and computer), 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 wins the game.
This game is a classic game package also includes four other games：
---WordSearch
---Sudoku
---Gomoku
---NumberLink.