Choose a rod
Black goes first. Choose one of the 16 rods and your ball drops to the lowest open level.
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4 × 4 × 4 GRAVITY GAME
3D Connect Four
Rotate the board, stack balls from the bottom, and find a line through space.
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RULES
How 3D Connect Four works
Stack from the bottom
Each rod holds four balls. You cannot place a ball directly on a higher level.
Connect four in space
Connect four vertically, horizontally, through depth, or diagonally.
Gravity
Every ball settles from the bottom up. You can place your ball on top of an opponent's ball.
Diagonal lines
Flat diagonals count, as do diagonals that travel upward through depth and the cube's corner-to-corner lines.
Rotate the board
Drag the board to inspect it from any angle. A short click on a rod drops a ball.
Full rods
A full rod cannot accept another ball. If every rod is full without a line, the game is a draw.