3D Tic Tac Toe is an advanced version of the regular Tic Tac Toe game. This game was particularly popular in the 1970s when a game maker released a board game, another company sold a printed pad of Tic Tac Toe games and Atari released a video game version. The game is played on a 4x4x4 cubic grid. 3x3x3 versions have been made but they aren't a fun gameplay experience as the game is usually quickly won! This game is easy to learn but the strategy is complex to master. Instructions included.