黑盒子是一个益智游戏，其中一名玩家通过在8x8网格上秘密选择4-5个大理石的位置创建一个谜题。另一名球员试图通过将“射线”射入网格并看到它们如何反弹来猜测他们的位置。要求最少的光线解决难题的玩家赢了。“＃德文第一版被命名为LOGO，但乐高公司并没有对这个标题感到好笑，认为会有混乱的可能。所以PARKER将第二版改名为ORDO。
Black Box or "KO-code" is a puzzle game in which one player creates a puzzle by secretly choosing the positions of 4-5 marbles on a 8x8 grid. The other player tries to guess their positions by shooting 'rays' into the grid and seeing how they bounce around. The player requiring the fewest rays to solve a puzzle wins. The German First Edition was named LOGO but the LEGO-Company was not amused with this Title and thought there will be a possibility of confusion. So PARKER renamed the Second Editon to ORDO.
