Ultimate Tic Tac Toe – Collapsible Board Game that Packs into a Cube

Take Tic Tac Toe to the next level with this fully 3D printable Ultimate Tic Tac Toe set featuring a clever collapsible board that disassembles and packs neatly into a compact cube-shaped storage container. This expanded version of the classic game adds depth and strategy by combining nine mini boards into one large grid — where every move determines your opponent’s next board.

The board assembles into a rigid 3×3 play surface, then breaks down and stores inside the cube along with all playing pieces. The result is a satisfying transformable design that’s perfect for travel, classrooms, family game night, or as a unique handmade gift.

Cube Packing & Board Assembly

For proper fit and alignment, assemble the grid in this order:

1. Center mini board
2. Four side-center boards
3. Four corner boards

This sequence ensures connectors seat cleanly and the board stays square.

After play, disassemble the nine boards and store them inside the cube container with the pieces for compact storage.

How to Play – Ultimate Tic Tac Toe

Players: 2
Goal: Win three mini boards in a row on the large board.

Setup

• Assemble the full board (see order above).
• Each player takes their X or O pieces.
• First player chooses any square on any mini board.

Gameplay

1. Player 1 places a piece in any cell of any mini board.
2. The position of that move determines which mini board the next player must use.
3. Players continue sending each other around the board this way.
4. When a player wins a mini board (3-in-a-row), they claim that board.
5. If sent to a mini board that is already won or full, the player may choose any open board.

Winning the Game

Win three claimed mini boards in a row on the large grid
(horizontal, vertical, or diagonal).

Watch the 2 min clip below to learn how to play: