A 3D game of Tic-Tac-Toe that can be played the same as the normal game, but in 3D! You can win the same ways as normal, but also with pillars, and diagonals that traverse multiple planes, among many other ways. If it's a way to win in a 2D game, you can do it in 3D too! Have fun!
I would recommend printing 14 X's and 14 O's, because that's enough to completely fill up the space, no matter which side goes first.
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