This is a fun little game that expands the original tic-tac-toe for when it gets too basic.

The columns and the base I have as separate files to make it more sturdy and more portable. Just insert the columns into the slots. They should be a snug fit but I have not printed this yet, so if its too tight or too loose let me know and I'll update it. 

15 is the recommended number for the “xs and os” (respectively) but you can get away with 14 (the last one is an extra, cuz you will lose them)

How you play the game is like regular tic-tac-toe just with multiple more dimensions to win on. You can build on pieces that have already been placed similar to connect four. The goal is to get three across in a straight line through any plane (diagonal too).