
Tristega adds another layer by taking nine Ultimate tic-tac-toe boards and putting them into a 3X3 grid. Ultimate tic-tac-toe is a two player game composed of nine tic-tac-toe boards arranged in a 3X3 grid, which makes two layers.

TRISTEGA (which is Latin for “a house of three stories or an engine used in sieges, consisting of a tower in three stories) is an expanded version of Ultimate Tic-Tac-Toe with a third level to the board. I play ultimate tic-tac-toe with my daughters all the time and i'm wondering if they would like this extra level.

Has anyone ever played this three level version of tic-tac-toe before?
