This game takes the simple concept of Tic-Tac-Toe to a whole new level. The game is played in nine playing fields, and one person's play determines in which playing field the next player may play. The game is played on a beautiful wood board with wood marbles in two colors. Metal rings are placed on the color of the marble who "wins" the playing zone. Only one "win" per playing zones. What starts out as a seemingly simple game becomes a complex strategic game. The board is played on Mad Cave Bird Games ColorKu board, so if you own ColorKu, you can just buy the "add on to ColorKu" unit for half the cost of the standard game.