Really GOOD as a gift to your friend and families or your enemies.Instructions:This is a game for two players.One player chooses X and one chooses OEach player takes it in turns to place their mark (X or O) on an empty square in the grid The winner is the first player to get four in a row in any direction - horizontally,vertically or diagonally.Winning lines can stretch across all four grids as long as they make a straight line from corner to corner.A variation of this game is instead of playing to make one row of four, the goal is to make as many rows of three as possible.3D Tic Tac Toe is an advanced version of the regular Tic Tac Toe game.This game was particularly popular in the 1970s when Parker Bros. released a board game called Qubic, 3M sold a printed pad of Tic Tac Toe games and Atari released a video game version. Qubic is no longer available but the rules and strategy tips are still available on Hasbro's website here: https://www.hasbro.com/common/instruct/Qubic.pdfAt the time of launching this update, '3D Tic Tac Toe' gets 56,500 monthly searches on Google and there are NO 3D Tic Tac Toe books available on Amazon. The game is played on a 4x4x4 cubic grid. 3x3x3 versions have been made but they aren't a fun game play experience as the game is usually quickly won! This game is easy to learn but the strategy is complex to master.