Fans of The Perplexus (one of my favorite puzzles) might be interested in Zenth, a 3D wooden labyrinth on Kickstarter. As in The Perplexus, the object is to guide a steel ball through a multiplanar labyrinth. In fact, the creator of Zenth was a student of the creator of The Perplexus, Michael McGinnis (who wrote an article for me about designing The Perplexus when I was editor-in-chief of Make).
