Space Checkers adapts traditional checkers to the 3rd dimension. Instead of 12 men on an 8x8 square, each side has 8 men on a 4x4x4 cube. The adaptation is straight-forward: Black sets up near the south lower edge and can only move north and up Red sets up near the north upper edge and can only move south and down. Captures and crowning are 3D analogs to the 2D case.Rather than having 4 large levels, the board is split into 4 towers of 2x2 portions. This allows one to more easily reach the pieces at the interiors of each level, without interfering with the visualization of the complete cube. - BoardGameGeek