If two dimensions wasn't enough, here's a third to make gaming a little more interesting.
Can you line up four of your color in a row before your opponent does?
Try printing the player pieces in more than two colors for an even more interesting game.
Both the pieces and connecting base can be scaled up or down pretty reliably. If you are scaling it down, make sure to increase the infill so that the rods remain strong.
The entire game, when assembled measures approximately 5.5 inches x 5.5 inches x 4.3 inches.
The various game elements shouldn't require supports to print.