Spone is a game for two players (White and Black) playable with a Series: Shibumi set. Start: The board starts with four red balls in the inner 2x2 square on the board level. Play: Players take turns either placing a ball of their color to any playable point or entering a ball of their color from the side on non board levels, pushing other balls. The entry may cause a drop but may not push any balls off the board. End: When the pyramid is complete, White wins if the greatest group (white or black) on the surface is even, Black wins if it is odd. Ties are not possible.