The rules of Tic-Tac-Toe (aka noughts and crosses) are well known: place a counter on a board with nine squares, and if you can fill a row, column or diagonal with your counters, you win. However, with this variant, the game takes on a whole new dimension: play happens on three levels, in a 3 × 3 × 3 cube of spaces. This opens up a lot of new possibilities, and will challenge even experienced players!

"The game has been analyzed mathematically and a winning strategy was developed and published. However, the strategy is too complicated for most human players to memorize and apply." - Wikipedia

Size: about 18 × 18 × 18cm